Bright LED http://www.adafruit.com/products/518
AAA battery holder http://www.radioshack.com/product/index.jsp?productId=2062246
3-d printed parts ---- I printed these, but they could be sent to ShapeWays or other service. TOOLS:
Hot Glue gun
solder iron or conductive glue FILES & LINKS: http://www.thingiverse.com/thing:78719
Derivative of Makerbots Lithopane that I've used. No border or hole. https://tinkercad.com/things/6C7zxGfTRaP-litholamptop/edit
TinkerCad File. Delete my picture and insert your own. http://www.pixlr.com
Web based image editor used to crop and reverse pictures. Use whatever image program you like.