Meet Lighty: a robotic HD laser projector with voice recognition that lets you watch movies on the ceiling or any wall. It can be used to present as well. It comes with a battery powerful enough for playing video up to 5 hours. Lighty can tilt and rotate. Since this is a laser projector, there is no need to focus.
Lighty offers WiFi and Bluetooth connectivity. It has Android at its core. The device has a 5000 mAh battery inside. More information is available on Indiegogo.