This $14,000 armchair, designed by CTRL ZAK and Davide Barzaghi uses a beechwood lattice and upholstered, giant geometric shapes that resemble quartz crystals. You can arrange them to suit your body and needs. The cost is more than I'm willing (or able!) to spend on an armchair, but I love the concept.
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.