For those of you reading this on Tuesday, Feb 24th, Woot.com has LED touch-n-lights on sale 2 for $7.99 ( + $5 shipping )
Little battery operated lights like this make excellent emergency lights for the computer room. If your electricity is out and you've got to work in there, these things are life savers (maybe literally).
I've actually got the round kind that they sell on TV. Here's a froogle search full of similar things.