Buy It Now: $80, ThinkGeek

Have a big room, but haven't gotten over the whole "monsters under your bed" thing? It's okay, use the Glo Nightlight and it's detachable Glowing Balls (that's really what they're called), and place them anywhere you want to get that peaceful glow you're looking for. They don't get hot, are durable, and their glow lasts about thirty minutes-just enough time for you to fall asleep. Unless the monsters get you first.