Building robots is hard. Seriously hard. Not only do you have to construct them physically, but even after you've got them all wired up with motors and sensors and batteries and whatnot, they won't actually DO anything until you've spent most of the rest of your life writing code. It's kind of depressing, when it comes down to it, because for those of us who aren't already professional roboticists, we have to deal with a learning curve like that really steep bit on the north face of the Matterhorn.
Back in 2010, a company called Modular Robotics introduced Cubelets, a system of robotic modules that could be magnetically snapped together. By themselves, the modules didn't do much, but by connecting them, you could build and program a robot at the same time, without any experience whatsoever. Last December, Modular Robotics came out with a slightly different take on this idea with MOSS. MOSS was successfully funded more than three times over on Kickstarter, and earlier this month at CES, we got a hands-on demo of the new kits.