This is the Make Project created by Christian Poulsen detailing how to build your own functional BB-8 droid with a Sphero robotic ball toy, a foam head, and a neodymium magnet. It works pretty well, although his head doesn't stay on top as smoothly as the real BB-8. Still, impressive for homemade, and way better than the BB-8 I made myself. "That is literally just a soccer ball." But-- "You didn't even paint it." I KNOW I KNOW, GOD, WHY CAN'T YOU BE SUPPORTIVE?
Keep going for a video of the mini droid in action. Go HERE to check out the Make Project and build your own.
Thanks to Dave L, who has his fingers crossed BB-8 finds love in the new movie.