It does sound like we're making it more complicated then what is being asked for. I was not able to come up with anything better then what has been mentioned. It is faster and most likely cheaper to just go to Walmart or Cabela's and pick something up.
I did include a link to the Pentagon Molle light we carry, it uses 1 AA battery. It is not a headlamp, the reason I didn't mention it but may be an option.
http://www.unholstered.com/webstore/pro ... 350&page=1