Minified/customizeable toolbar

In many applications with a toolbar, you can right-click the toolbar to customize it (rearrange where the controls are). You can also add/remove control text/icons, and you can select "use small size" (Disk Utility is a reasonable implementation of the features mentioned - some lack the use-small-size option). There's also a hide option, though that doesn't seem useful in this situation.

It'd be nice on small-screen devices (like my MBA) to be able to reduce the toolbar size some.