Mack sez, "Is your papercraft-fu strong enough to tackle the 595-page manual that tells you how to build this V12 engine model with moving cranks and pistons and LEDs that "fire" to indicate an ignition or exhaust cycle? Gather your strength, grasshopper. I can tell by your bug-eyed gape that you are not yet ready." Link (Thanks, Mack!)
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.