Even though tablets and smartphones are on the rise, many of us still use a regular computer and mouse to get our work done. Want to bring gesture-based navigation to your computer? You will need an evoMouse. This virtual mouse turns any surface into a touchpad. You can click, drag, scroll, and zoom just with your fingers. The evoMouse works via IR. It should work on any flat surface.
The evoMouse is compatible with Macs, iPhones, iPads, Windows, Android, Blackberry, and Symbian devices. Just bring your hand and you are set. The battery life could be better though (2 hours of wireless use). Sets you back under $80.