Our tablets and smartphones have taught us to use gestures to do things on our devices. Not all computers have gesture-based navigation. evoMouse is designed to solve that issue. This virtual mouse turns any flat surface into a touchpad. You will be able to click, drag, scroll, right-click, zoom, and all kinds of cool things. The evoMouse combines an IR pulse emitter with a sensor to get the job done.
The evoMouse responds to your hand gestures. It is compatible with Macs, iOS devices, and Android smartphones. Just put it on a flat surface, and you should be set. You can connect it via Bluetooth or a USB cable. Think of this as a portable multi-touch mouse. The device is available on ThinkGeek for under $80.