ROOM Collection Furniture System by Erik Olovsson Kyuhyung Cho lets you compose your own furniture, with 25 stackable blocks, each with a cut-out volume inspired by a particular object, along with a low table and a mirror.
This genius idea just seems too simple. Create a pen caddy with toilet paper rolls and an old shoe box! Or, use them to organize those pesky cords. ( this page isn't found but I think you get the idea )