how about this?
http://www.lightwedge.com/prod_original.html
i have gameboy advance that use same method to light it screen until i bought my nds
it really useful and bright, but gameboy advance use lcd with no backlight, i wonder if THIS thing combine with lightwedge will came same result with my gameboy...
how about this one
http://www.lightwedge.com/prod_original.html