An MP3 knob. Yeah, that's right, a knob
Sometimes, simplicity works
As the iPod and other players are increasingly woven into theof our lives, something like this could actually be useful. Attached to your iPod-enabled clothes or by Velcro or magnet, the knob could preclude unnecessary fumbling in cramped quarters. Of course, if you want more than volume control, you can always go the route.
(Photo: Plusminus Design)