I'm generally unimpressed with Harbor Freights offerings but this little light is well worth the $4 and can be utilized in several ways.

http://www.harborfreight.com/27-led-portable-worklight-flashlight-67227.html

I've bought several and keep them in various locations. I have not done a runtime test but I know it will light a room up very well.

They take 3x AAA batteries.