Here's video of the triumphant success of an elaborate kids' Rube Goldberg machine, created at an "informal Rube Goldberg summer camp for kids ages 3-8." I know nothing about this summer-camp, but it seems like one of the great Good Things of our era -- especially judging from the awesome elation of the kids after the successful run!
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.