Free on Craigslist DC: a partially completed (and rather well-done) Tardis pinata.
FREE: homemade TARDIS pull-string pinata. My 6 year-old daughter wanted a Dr. Who birthday and as nobody in the US sells Dr. Who pinatas I made this one. Unfortunately I ran out of time so the door panels and windows are only on 2 sides and didn't get around to putting any of the signs on it but you are free to finish it as much or as little as you like.
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.