Redditor JonXP made this wicked "Princess Vader" costume at his five year old daughter's request: "I painted the helmet, and sewed the cape (my first sewing project ever). It was fun to put together."
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.