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New from TokyoFlash, purveyors of fine and impractical Japanese hipster novelty watches: the LED by Binary. It's a watch with a naked printed circuit board, on which are situated 10 LEDs, which glow to display the time in binary notation. ¥8900.00 -- about $80. Link 
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.