Meet the R2-D2 Virtual Keyboard: a cool Star Wars gadget that lets you type on any flat surface. It has a projector with a range of 10 meters. It is a full-functioning 68-key QWERTY keyboard with Bluetooth, so you can use it with iPhone, Android, Windows, and other devices.
This keyboard is available in an R2-Q5 version too. It has a 660 mAh battery that lasts up to 2 hours.