Peugeot Onyx Sofa
It might be called a sofa, but we doubt you'll be "plopping down" on the Peugeot Onyx Sofa. For one, it's made out of lacquered black carbon fiber that's been fused to a hand-cut portion of Volvic volcanic lava stone from France's Auvergne region, none of which sounds very springy. It also weighs 800 pounds, most of which is centered on one side of its 10-foot body — so depending on where you've put it, you probably won't want to put any extra stress on your floor. Then again, considering the price, we're sure you've already thought of that.