It fits in the palm of your hand. Yet its screen is larger than anything you can fit in your backpack. The Touchjet Touch Screen Projector combines the innards of a tablet with a projector and an optical sensor, allowing the projected image to work as a giant 80" touch screen. It has 4GB of flash storage and another 16GB on an internal SD card, a 1.6Ghz dual-core processor, built-in Wi-Fi and Bluetooth, and offers compatibility with apps from the Google Play store. Arrives with a remote, as well as two styluses for interacting directly with the screen.