This clever lad has arrayed a long row of bottles partially filled with liquid so that they play the theme from Super Mario Bros. when they are tapped in order; then he affixed a tapper to a remote-control car and drove it down the row, making for an unforgettable musical experience! Link (Thanks, Kyle!)
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.