gwjenkins asks: "I'm a teacher in charge of IT in a small school. We would like to bust out of the computer lab model but don't want a trolley of laptops wheeled from class to class. I've drooled over wi-fi PDAs but just can't afford a set for class (and the batteries drain too fast). In a classroom, space is at a premium and teachers won't use a technology that takes too long to set up. Most of the time the kids are just researching (Google), or typing (Google Docs), the rest of the time they can go to a lab. I would love to have a desk-based solution. Can you run a wi-fi mini-pc (sitting under the desk) from a 12-volt rechargeable battery (also sitting under the desk) with a 7" LCD (sitting on the desk), that boots from flash card into FireFox? No wires! No setup time! Has anyone done this? How? Alternatively can anyone say why this is silly?"