3D Creations' 3D Printed D20 Dice Box are giant D20s that you store your D20s (and other polyhedra) in.
They're 3D printed to order in a variety of materials, including glow-in-the-dark plastic, and you can get 'em in sizes ranging from "small" to "honkin' huge." It's a stylish way to hold your randomness.
They also have a 3D printed castle you can use to roll your dice.
(via Geekologie)