I set up the light box last night and experimented a bit, then changed some things around this afternoon and experimented some more. I'm sure I'll be tweaking things a bit as it gets more use, but it will definitely get more use. Thank you, Chris, for sharing your inexpensive option.
Here are a couple photos of the altered Friendly Plastic pendant. I used a Dremel to grind down a mirrored glass piece (by Diamond Tech) and a craft iron to remove enough fp from the original fp piece to accommodate the glass. The back of the pendant is embossed pewter. Everything but the top of the glass and the bail is sealed with glaze. I like the results and am anxious to create more fp pieces. Have you tried this fun medium yet?