Buttons/toolbars to appear on drive-connect

We have disabled buttons on unselection, what about buttons/toolbars to appear when a drive is connected (something like Windows autostart-options)?

For example I have a button ejecting USB-Drives (faster than the Windows thing), so it would be great if it only appears when an USB-Drive is connected and hidden when disconnected. Other examples could be auto-changing style on connected MP3-player (switching to a special view, toolbar, etc..) or external storage (showing sync-window).

...for realizing maybe just opening a defined style (incl. toolbars) on connect would be cool.