I don't know if my girlfriend would allow me to get Bart Lens' gargantuan XXXLamp - the world's largest lamp in production - but I really like the idea of it covering the entire bed and having it close like a cocoon.
The only problem is that, at 4m in diameter and 1.6m high, I doubt it will fit anywhere in our apartment. The XXXLamp uses three white light sources, but you can order it with RGB LED sources to achieve any colour you want at any time with a remote controller, like the much smaller Philips Livingcolors Lamp. Oh prettiness. [Eden Design via Dezeen]