Kindle
CrystalCaste sells polyhedral gaming dice (like those used in Dungeons and Dragons) made of extraordinary materials, from semi-precious gems to meteorites and mammoth ivory. Shown here is a set of hematite dice from a customer's collection.
Link to gemstone dice, Link to meteorite dice
(via Wonderland)
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.