The Hauntbox is an open-source hardware controller for all the sensors and controllers necessary to build sophisticated, automated electronic haunting projects. It requires no soldering or prior knowledge to use, and is fully hackable and accepts Arduino shields. The Kickstarter was successful, and they've gone into full production: you can pre-order them for next Hallowe'en now.
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.