This bookcase cum office design definitely fulfills my childhood fantasies of living/working out of a closet box. A little like how Polly Pocket (below) lives.
To make this yourself, just attach a set of bookcases (on wheels) attached along one side and you get a compact, self-contained office nook when opened. In its closed state, it's far tidier than any tidy desk you can make. You may want to plaster the back of one with wallpaper. A deeper bookcase could be attached at one side that will serve as the desk. Brilliant! (via Martha Stewart Living and Chic & Charming)