Elysium Woodworks's Etsy store is full of gorgeous, laser-etched, math- and science-themed cutting boards. They're about $35, made from bamboo, and take 5-6 weeks to fabricate.
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.