Kathryn writes, "I spent a while last night and this morning decorating Easter eggs in Mathematica and this activity has proved wildly popular in this household: My children are going to run me out of toner in my color printer very shortly. My daughter has made a document entitled 'My Little Egg Book' out of egg printouts." Link, Link to equations for egg shapes
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.