Most pocket-sized printers are really shrunken versions of what you'd see on your desk. Rather boring, don't you think? Zuta Labs' upcoming Pocket Printer robot may liven things up a little. Instead of using an old-fashioned paper feed, it runs over the page laying grayscale ink. This Roomba-like approach isn't just a party trick, though. Besides leading to a very portable design, it lets you print on any size page you like -- if you need to get a legal form while you're at the coffee shop, you can.