Get two of the legs ($10 each) and a glass table ($100) from ikea and you have yourself a nice desk, that's what I have in my room. 😎
The legs look abit fragile, but it's not. I have a 19" CRT, 17" LCD, a subwoofer, a few magazines, keyboard/mouse and my MBP on it and still have room to work on and it's pretty sturdy.