I just moved in to a new apartment, and one of the rooms is painted completely white. All it has in it is my desk (which is completely white) and a black futon. The room is basically a music/work/guest room, but if it is this boring and dull I'm not gonna want to work in there ever! The room has a window and the back door, too.
What are some good ways to decorate a white room without painting it?