Kindle
Matthew Gale's prizewinning design for a jacket for people who sleep on public transit is exactly what I need. The jacket has a high, rigid collar that can be raised to keep your head upright while you snooze, like a cervical collar for spinal injuries. I spend a lot of time trying to sleep in airport lounges, planes, etc, and something like this would be a godsend. I'd buy it in a second. Link (via Gizmodo)
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.