Tembolat Gugkaev's concept design for "Darth Hairdryer" got the nod from the hairdryer-using half of my household. Speaking for me, though, I'd only get one if it played the Darth Vader March using its engine while you blow-dried your hair.
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.