Have an add-on, tool, gadget, or accessory that you find enhances your iTouch/iPhone experience? Please feel free to share it here.

'Thumb Tack' microphone - This 'pin in your pod' microphone is as 'cute as a button'. Works with the iTouch 2G (requires a 3rd party app). (ns)

Coming out in September is the projector for the iPodTouch/iPhone. Doesn't allow full screen sharing yet just videos. Apparently Apple have to tweek the software so full screen sharing can occur. This would be terrific if possible. You can connect the ipod to the TV with cables and view video.

MiLi Pro - iPhone, iPod Video Projector