Shareable rounds up 20 Open Source Furniture Designs -- ingenious plans for home furnishings that you can make yourself, improve upon, and share. My favorite is this Never Ending Bench by Félix Lévêque, which you can keep on adding slats to in order to create a seat tailored to your needs. Like many of the pieces, this one comes from the Open Design Contest.
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.