, we created our own light "table" from materials around the house:
A clear tub with a lid (ours was from IKEA)
A couple sheets of white paper
A string of white Christmas lights
First, we taped the two sheets of paper together and taped them to the inside of the lid
Next we lined the tub with aluminum foil, shiny side facing into the tub (we need reflection!).
We put the lights inside the tub, with enough cord hanging out to reach an outlet.
If you want to get real fancy, you can drill/cut a hole for the cord to come out through in the bottom of the tub. We, however, just put the lid on enough that it was basically closed, but the cord still hung out.
Time to experiment! What materials around the house are transparent, or semitransparent? My 8-year-old was surprised how many of her baby brother's plastic bath toys seemed to glow when placed on the light surface. She then got the great idea to see what plastic lightsabers would look like.
What else can you use on a light table?
Transparent Lego/Duplo blocks, dry erase markers to write letters and words, finger paint (you may need a larger tub to provide more space), thin slices of colorful agate, cut out paper shapes and make shadow puppets, use eye droppers with colored water...so many possiblities!