How do you get better at making more robots? By rethinking how you build the manufacturing robots, apparently. MIT researchers have developed a minuscule "walking" motor that allows for robots which should be at once customizable, fast and inexpensive. It's made of just five modular parts, including rigid and flexible components, electromagnetics, a coil and a magnet. Those move an appendage that lets the robot crawl, grip, push and otherwise perform tasks without a complex set of parts -- it's likened to a "micro-Lego" that can be configured to do what you want with a minimum of fuss.