diff --git a/appkit/src/lib.rs b/appkit/src/lib.rs
index bb88de8..b843aa5 100644
--- a/appkit/src/lib.rs
+++ b/appkit/src/lib.rs
@@ -49,7 +49,7 @@ pub mod prelude {
     
     pub use crate::menu::{Menu, MenuItem};
     pub use crate::notifications::{Notification, NotificationCenter, NotificationAuthOption};
-    pub use crate::toolbar::{Toolbar, ToolbarController};
+    pub use crate::toolbar::{Toolbar, ToolbarController, ToolbarHandle};
 
     pub use crate::networking::URLRequest;
 
diff --git a/appkit/src/toolbar/class.rs b/appkit/src/toolbar/class.rs
new file mode 100644
index 0000000..b05e996
--- /dev/null
+++ b/appkit/src/toolbar/class.rs
@@ -0,0 +1,91 @@
+//! Handles the Objective-C functionality for the Toolbar module.
+
+use std::rc::Rc;
+use std::sync::Once;
+
+use cocoa::base::{id, nil};
+use cocoa::foundation::{NSArray, NSString};
+
+use objc::declare::ClassDecl;
+use objc::runtime::{Class, Object, Sel};
+use objc::{class, sel, sel_impl};
+
+use crate::constants::TOOLBAR_PTR;
+use crate::toolbar::traits::ToolbarController;
+use crate::utils::{load, str_from};
+
+/// Retrieves and passes the allowed item identifiers for this toolbar.
+extern fn allowed_item_identifiers<T: ToolbarController>(this: &Object, _: Sel, _: id) -> id {
+    let toolbar = load::<T>(this, TOOLBAR_PTR);
+
+    unsafe {
+        let identifiers = {
+            let t = toolbar.borrow();
+
+            (*t).allowed_item_identifiers().iter().map(|identifier| {
+                NSString::alloc(nil).init_str(identifier)
+            }).collect::<Vec<id>>()
+        };
+
+        Rc::into_raw(toolbar);
+        NSArray::arrayWithObjects(nil, &identifiers)
+    }
+}
+
+/// Retrieves and passes the default item identifiers for this toolbar.
+extern fn default_item_identifiers<T: ToolbarController>(this: &Object, _: Sel, _: id) -> id {
+    let toolbar = load::<T>(this, TOOLBAR_PTR);
+
+    unsafe {
+        let identifiers = {
+            let t = toolbar.borrow();
+            
+            (*t).default_item_identifiers().iter().map(|identifier| {
+                NSString::alloc(nil).init_str(identifier)
+            }).collect::<Vec<id>>()
+        };
+
+        Rc::into_raw(toolbar);
+        NSArray::arrayWithObjects(nil, &identifiers)
+    }
+}
+
+/// Loads the controller, grabs whatever item is for this identifier, and returns what the
+/// Objective-C runtime needs.
+extern fn item_for_identifier<T: ToolbarController>(this: &Object, _: Sel, _: id, identifier: id, _: id) -> id {
+    let toolbar = load::<T>(this, TOOLBAR_PTR);
+    let identifier = str_from(identifier);
+    
+    let mut item = {
+        let t = toolbar.borrow();
+        let item = (*t).item_for(identifier);
+        item
+    };
+
+    Rc::into_raw(toolbar);
+    &mut *item.inner
+}
+
+/// Registers a `NSToolbar` subclass, and configures it to hold some ivars for various things we need
+/// to store. We use it as our delegate as well, just to cut down on moving pieces.
+pub(crate) fn register_toolbar_class<T: ToolbarController>() -> *const Class {
+    static mut TOOLBAR_CLASS: *const Class = 0 as *const Class;
+    static INIT: Once = Once::new();
+
+    INIT.call_once(|| unsafe {
+        let superclass = class!(NSToolbar);
+        let mut decl = ClassDecl::new("RSTToolbar", superclass).unwrap();
+        
+        // For callbacks
+        decl.add_ivar::<usize>(TOOLBAR_PTR);
+
+        // Add callback methods
+        decl.add_method(sel!(toolbarAllowedItemIdentifiers:), allowed_item_identifiers::<T> as extern fn(&Object, _, _) -> id);
+        decl.add_method(sel!(toolbarDefaultItemIdentifiers:), default_item_identifiers::<T> as extern fn(&Object, _, _) -> id);
+        decl.add_method(sel!(toolbar:itemForItemIdentifier:willBeInsertedIntoToolbar:), item_for_identifier::<T> as extern fn(&Object, _, _, _, _) -> id);
+
+        TOOLBAR_CLASS = decl.register();
+    });
+
+    unsafe { TOOLBAR_CLASS }
+}
diff --git a/appkit/src/toolbar/handle.rs b/appkit/src/toolbar/handle.rs
new file mode 100644
index 0000000..48175ab
--- /dev/null
+++ b/appkit/src/toolbar/handle.rs
@@ -0,0 +1,55 @@
+//! A wrapper for the underlying `NSToolbar`, which is safe to clone and pass around. We do this to
+//! provide a uniform and expectable API.
+
+use cocoa::base::{YES, NO};
+use cocoa::foundation::{NSUInteger};
+
+use objc::{msg_send, sel, sel_impl};
+use objc::runtime::Object;
+use objc_id::ShareId;
+
+use crate::toolbar::types::{ToolbarDisplayMode, ToolbarSizeMode};
+
+#[derive(Clone, Debug)]
+pub struct ToolbarHandle(pub ShareId<Object>);
+
+impl ToolbarHandle {
+    /// Indicates whether the toolbar shows the separator between the toolbar and the main window
+    /// contents.
+    pub fn set_shows_baseline_separator(&self, shows: bool) {
+        unsafe {
+            let _: () = msg_send![&*self.0, setShowsBaselineSeparator:match shows {
+                true => YES,
+                false => NO
+            }];
+        }
+    }
+
+    /// Sets the toolbar's display mode.
+    pub fn set_display_mode(&self, mode: ToolbarDisplayMode) {
+        let mode: NSUInteger = mode.into();
+
+        unsafe {
+            let _: () = msg_send![&*self.0, setDisplayMode:mode];
+        }
+    }
+
+    /// Sets the toolbar's size mode.
+    pub fn set_size_mode(&self, mode: ToolbarSizeMode) {
+        let mode: NSUInteger = mode.into();
+
+        unsafe {
+            let _: () = msg_send![&*self.0, setSizeMode:mode];
+        }
+    }
+
+    /// Set whether the toolbar is visible or not.
+    pub fn set_visible(&self, visibility: bool) {
+        unsafe {
+            let _: () = msg_send![&*self.0, setVisible:match visibility {
+                true => YES,
+                false => NO
+            }];
+        }
+    }
+}
diff --git a/appkit/src/toolbar/mod.rs b/appkit/src/toolbar/mod.rs
index e09d744..e30d423 100644
--- a/appkit/src/toolbar/mod.rs
+++ b/appkit/src/toolbar/mod.rs
@@ -1,4 +1,39 @@
-//! Module hoisting.
+//! This module contains a wrapper for `NSToolbar`, one of the standard UI elements in a native
+//! Cocoa application. To customize it and provide options, you should implement a
+//! `ToolbarController` for your desired struct, and instantiate your `Toolbar` with it. For
+//! example:
+//!
+//! ```
+//! use appkit::prelude::*;
+//!
+//! #[derive(Default)]
+//! struct WindowToolbar;
+//!
+//! impl ToolbarController for WindowToolbar {
+//!     /* Your trait implementation here */
+//! }
+//!
+//! ```
+//!
+//! And then, wherever your window is:
+//!
+//! ```
+//! #[derive(Default)]
+//! struct AppWindow {
+//!     pub toolbar: Toolbar<WindowToolbar>
+//! }
+//!
+//! impl WindowController for AppWindow {
+//!     fn did_load(&mut self, window: WindowHandle) {
+//!         window.set_toolbar(&self.toolbar);
+//!     }
+//! }
+//! ```
+
+pub(crate) mod class;
+
+pub mod handle;
+pub use handle::ToolbarHandle;
 
 pub mod item;
 pub use item::ToolbarItem;
@@ -8,3 +43,6 @@ pub use traits::ToolbarController;
 
 pub mod toolbar;
 pub use toolbar::Toolbar;
+
+pub mod types;
+pub use types::*;
diff --git a/appkit/src/toolbar/toolbar.rs b/appkit/src/toolbar/toolbar.rs
index 5de843d..02129ac 100644
--- a/appkit/src/toolbar/toolbar.rs
+++ b/appkit/src/toolbar/toolbar.rs
@@ -5,26 +5,33 @@
 
 use std::cell::RefCell;
 use std::rc::Rc;
-use std::sync::Once;
 
 use cocoa::base::{id, nil};
-use cocoa::foundation::{NSArray, NSString};
+use cocoa::foundation::NSString;
 
 use objc_id::ShareId;
-use objc::declare::ClassDecl;
-use objc::runtime::{Class, Object, Sel};
-use objc::{class, msg_send, sel, sel_impl};
+use objc::{msg_send, sel, sel_impl};
 
 use crate::constants::TOOLBAR_PTR;
+use crate::toolbar::class::register_toolbar_class;
+use crate::toolbar::handle::ToolbarHandle;
 use crate::toolbar::traits::ToolbarController;
-use crate::utils::{load, str_from};
+use crate::toolbar::types::{ToolbarDisplayMode, ToolbarSizeMode};
 
 /// A wrapper for `NSToolbar`. Holds (retains) pointers for the Objective-C runtime 
 /// where our `NSToolbar` and associated delegate live.
 pub struct Toolbar<T> {
+    /// A pointer that we "forget" until dropping this struct. This allows us to keep the retain
+    /// count of things appropriate until the Toolbar is done.
     internal_callback_ptr: *const RefCell<T>,
+
+    /// An internal identifier used by the toolbar. We cache it here in case users want it.
     pub identifier: String,
-    pub objc_controller: ShareId<Object>,
+
+    /// The Objective-C runtime controller (the toolbar, really - it does double duty).
+    pub objc_controller: ToolbarHandle,
+
+    /// The user supplied controller.
     pub controller: Rc<RefCell<T>>
 }
 
@@ -41,7 +48,7 @@ impl<T> Toolbar<T> where T: ToolbarController + 'static {
         };
 
         let objc_controller = unsafe {
-            let delegate_class = register_delegate_class::<T>();
+            let delegate_class = register_toolbar_class::<T>();
             let identifier = NSString::alloc(nil).init_str(&identifier);
             let alloc: id = msg_send![delegate_class, alloc];
             let toolbar: id = msg_send![alloc, initWithIdentifier:identifier];
@@ -52,95 +59,49 @@ impl<T> Toolbar<T> where T: ToolbarController + 'static {
             ShareId::from_ptr(toolbar)
         };
 
+        {
+            let mut c = controller.borrow_mut();
+            (*c).did_load(ToolbarHandle(objc_controller.clone()));
+        }
+
         Toolbar {
             internal_callback_ptr: internal_callback_ptr,
             identifier: identifier,
-            objc_controller: objc_controller,
+            objc_controller: ToolbarHandle(objc_controller),
             controller: controller
         }
     }
+
+    /// Indicates whether the toolbar shows the separator between the toolbar and the main window
+    /// contents.
+    pub fn set_shows_baseline_separator(&self, shows: bool) {
+        self.objc_controller.set_shows_baseline_separator(shows);
+    }
+
+    /// Sets the toolbar's display mode.
+    pub fn set_display_mode(&self, mode: ToolbarDisplayMode) {
+        self.objc_controller.set_display_mode(mode);
+    }
+
+    /// Sets the toolbar's size mode.
+    pub fn set_size_mode(&self, mode: ToolbarSizeMode) {
+        self.objc_controller.set_size_mode(mode);
+    }
+
+    /// Set whether the toolbar is visible or not.
+    pub fn set_visible(&self, visibility: bool) {
+        self.objc_controller.set_visible(visibility);
+    }
 }
 
 impl<T> Drop for Toolbar<T> {
     /// A bit of extra cleanup for delegate callback pointers.
+    /// Note: this currently doesn't check to see if it needs to be removed from a Window it's
+    /// attached to. In theory this is fine... in practice (and in Rust) it might be wonky, so
+    /// worth circling back on at some point.
     fn drop(&mut self) {
         unsafe {
             let _ = Rc::from_raw(self.internal_callback_ptr);
         }
     }
 }
-
-/// Loops back to the delegate.
-extern fn allowed_item_identifiers<T: ToolbarController>(this: &Object, _: Sel, _: id) -> id {
-    let toolbar = load::<T>(this, TOOLBAR_PTR);
-
-    unsafe {
-        let identifiers = {
-            let t = toolbar.borrow();
-
-            (*t).allowed_item_identifiers().iter().map(|identifier| {
-                NSString::alloc(nil).init_str(identifier)
-            }).collect::<Vec<id>>()
-        };
-
-        Rc::into_raw(toolbar);
-        NSArray::arrayWithObjects(nil, &identifiers)
-    }
-}
-
-/// Loops back to the delegate.
-extern fn default_item_identifiers<T: ToolbarController>(this: &Object, _: Sel, _: id) -> id {
-    let toolbar = load::<T>(this, TOOLBAR_PTR);
-
-    unsafe {
-        let identifiers = {
-            let t = toolbar.borrow();
-            
-            (*t).default_item_identifiers().iter().map(|identifier| {
-                NSString::alloc(nil).init_str(identifier)
-            }).collect::<Vec<id>>()
-        };
-
-        Rc::into_raw(toolbar);
-        NSArray::arrayWithObjects(nil, &identifiers)
-    }
-}
-
-/// Loops back to the delegate.
-extern fn item_for_identifier<T: ToolbarController>(this: &Object, _: Sel, _: id, identifier: id, _: id) -> id {
-    let toolbar = load::<T>(this, TOOLBAR_PTR);
-    let identifier = str_from(identifier);
-    
-    let mut item = {
-        let t = toolbar.borrow();
-        let item = (*t).item_for(identifier);
-        item
-    };
-
-    Rc::into_raw(toolbar);
-    &mut *item.inner
-}
-
-/// Registers an `NSObject` subclass, and configures it to hold some ivars for various things we need
-/// to store.
-fn register_delegate_class<T: ToolbarController>() -> *const Class {
-    static mut TOOLBAR_CLASS: *const Class = 0 as *const Class;
-    static INIT: Once = Once::new();
-
-    INIT.call_once(|| unsafe {
-        let superclass = class!(NSToolbar);
-        let mut decl = ClassDecl::new("RSTToolbar", superclass).unwrap();
-        
-        // For callbacks
-        decl.add_ivar::<usize>(TOOLBAR_PTR);
-
-        // Add callback methods
-        decl.add_method(sel!(toolbarAllowedItemIdentifiers:), allowed_item_identifiers::<T> as extern fn(&Object, _, _) -> id);
-        decl.add_method(sel!(toolbarDefaultItemIdentifiers:), default_item_identifiers::<T> as extern fn(&Object, _, _) -> id);
-        decl.add_method(sel!(toolbar:itemForItemIdentifier:willBeInsertedIntoToolbar:), item_for_identifier::<T> as extern fn(&Object, _, _, _, _) -> id);
-
-        TOOLBAR_CLASS = decl.register();
-    });
-
-    unsafe { TOOLBAR_CLASS }
-}
diff --git a/appkit/src/toolbar/traits.rs b/appkit/src/toolbar/traits.rs
index 7f56076..fda374f 100644
--- a/appkit/src/toolbar/traits.rs
+++ b/appkit/src/toolbar/traits.rs
@@ -2,10 +2,16 @@
 //! go. Currently a bit incomplete in that we don't support the customizing workflow, but feel free
 //! to pull request it.
 
+use crate::toolbar::handle::ToolbarHandle;
 use crate::toolbar::item::ToolbarItem;
 
 /// A trait that you can implement to have your struct/etc act as an `NSToolbarDelegate`.
 pub trait ToolbarController {
+    /// This method can be used to configure your toolbar, if you need to do things involving the
+    /// handle. Unlike some other view types, it's not strictly necessary, and is provided in the
+    /// interest of a uniform and expectable API.
+    fn did_load(&mut self, _toolbar: ToolbarHandle) {}
+
     /// What items are allowed in this toolbar.
     fn allowed_item_identifiers(&self) -> Vec<&'static str>;
 
diff --git a/appkit/src/toolbar/types.rs b/appkit/src/toolbar/types.rs
new file mode 100644
index 0000000..fd8f889
--- /dev/null
+++ b/appkit/src/toolbar/types.rs
@@ -0,0 +1,53 @@
+//! Various types used for Toolbar configuration.
+
+use cocoa::foundation::NSUInteger;
+
+/// Represents the display mode(s) a Toolbar can render in.
+#[derive(Clone, Copy, Debug)]
+pub enum ToolbarDisplayMode {
+    /// The default display mode.
+    Default,
+
+    /// Show icon and label.
+    IconAndLabel,
+
+    /// Show icon only.
+    IconOnly,
+
+    /// Show label only.
+    LabelOnly
+}
+
+impl From<ToolbarDisplayMode> for NSUInteger {
+    fn from(mode: ToolbarDisplayMode) -> Self {
+        match mode {
+            ToolbarDisplayMode::Default => 0,
+            ToolbarDisplayMode::IconAndLabel => 1,
+            ToolbarDisplayMode::IconOnly => 2,
+            ToolbarDisplayMode::LabelOnly => 3
+        }
+    }
+}
+
+/// Represents the size mode a Toolbar can use.
+#[derive(Clone, Copy, Debug)]
+pub enum ToolbarSizeMode {
+    /// The default size mode.
+    Default,
+
+    /// The regular size mode.
+    Regular,
+
+    /// The small size mode.
+    Small
+}
+
+impl From<ToolbarSizeMode> for NSUInteger {
+    fn from(mode: ToolbarSizeMode) -> Self {
+        match mode {
+            ToolbarSizeMode::Default => 0,
+            ToolbarSizeMode::Regular => 1,
+            ToolbarSizeMode::Small => 2
+        }
+    }
+}
diff --git a/appkit/src/window/handle.rs b/appkit/src/window/handle.rs
index 66cd570..31b6615 100644
--- a/appkit/src/window/handle.rs
+++ b/appkit/src/window/handle.rs
@@ -90,11 +90,11 @@ impl WindowHandle {
     }
 
     /// Used for setting a toolbar on this window. 
-    pub fn set_toolbar<TB: ToolbarController>(&self, toolbar: &Toolbar<TB>) {
+    pub fn set_toolbar<TC: ToolbarController>(&self, toolbar: &Toolbar<TC>) {
         if let Some(controller) = &self.0 {
             unsafe {
                 let window: id = msg_send![*controller, window];
-                let _: () = msg_send![window, setToolbar:&*toolbar.objc_controller];
+                let _: () = msg_send![window, setToolbar:&*toolbar.objc_controller.0];
             }
         }
     }
diff --git a/appkit/src/window/window.rs b/appkit/src/window/window.rs
index c605483..236e4da 100644
--- a/appkit/src/window/window.rs
+++ b/appkit/src/window/window.rs
@@ -93,7 +93,7 @@ impl<T> Window<T> where T: WindowController + 'static {
     }
 
     /// Sets the toolbar for this window.
-    pub fn set_toolbar<TB: ToolbarController>(&self, toolbar: &Toolbar<TB>) {
+    pub fn set_toolbar<TC: ToolbarController + 'static>(&self, toolbar: &Toolbar<TC>) {
         self.objc_controller.set_toolbar(toolbar);
     }