First post, so be gentle!. So I am making my son a Suit from the Pepakura templates, and have been searching out some resources for LED for the helmet. Here is an ebay link ( although at home depot they are only $8 each!) http://cgi.ebay.com/retractable-LED-flash-...5QQcmdZViewItem Once I opened the case, the inner 'gubbings' is perfect for the helmet, a quick re-wire so it only need one battery instead of 2, and you have the circuit board and LED.s and it only little visor for the lights, ready to go. I will post some pics of it once i have installed them, but for a solution that came to about $16 and required soldering, it seems a good option to me. Hope some find this of some use.