Check out http://www.uvpaqlite.com/index.html "UVPaqlite, a family business, is dedicated to bringing a new light source to people around the world. Our amazing lights do not require batteries, bulbs, electricity, fuels, or mechanical parts. They glow all night long, can be used over-and-over again forever, and are environmentally friendly. We have several products available for our customers the UVPaqlite, Tooblite, Scooblite, and GIDS" Chem lights won't work (long) after their expatriation dates...these may be a solution... I just ordered some...will report back after getting them and playing with them... Wanna kill these ads? We can help!