I found this while gearing up at Gander Mountain Today
Pretty Cool! It takes 4 disc batterys and claims 50 hours of operation. I picked it up to help when pulling into a campsite after dark and still needing to set up. I think this is less likely to be claimed by the girls than an LED headband...especially after I get it a little stinky on a hot day.
Got it for around $15
Just thought I would share.