The Magic Cube by Celluon is a mobile projection keyboard that runs $170 as of this writing.  Reviews are mixed on this product.  Some don’t feel it’s there yet stating it’s only appropriate for hunt and peck style typing but others are raving about it.

The Magic cube is small, portable and weighs about a pound.

It’s salient features:

  • Projects a full-size laser keyboard / multi-touch mouse onto any flat surface
  • Charges via USB. No drivers to install
  • Rechargeable battery lasts for 2 hours of continuous typing
  • Connects wirelessly via bluetooth to iPhone, iPad, many Smartphones and most Laptops
  • Supported by Apple iOS 4 and Mac OS X, Android, all Windows platform via USB/Bluetooth (HID).