London's Thornhill Jewellery takes old British coinage and
laser-cuts carves sweet/funny/silly designs into them. You can also get them made to order from the year of your choosing (to celebrate a birthday, for example). I saw several of these in person Sunday at Spitalfields Market and they're just great.
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.