Tama-chan is a portable watermelon refrigerator on wheels. The Japanese device retails for 19,950 yen (about $200) and can handle watermelons or similarly shaped comestibles, such as poultry, roasts, or severed heads. The device itself weighs 6.3kg, and charges from a car lighter socket.
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.