@techieman33: That's a good idea -- and may be the most efficient + economical solution. What I don't know, and would be interested to hear about if you or others do, is whether the alignment of the bulb affects the shadows in a significant way. The lights built by Gioco Vita (and similar...
I'm hoping to build some custom light fixtures, and my local sources for advice are swamped at the moment. I'm not a designer/electrician by trade -- I make small scale shadow theatre/puppetry shows with a variety of effects, and I'm looking to do something similar to what was discussed in this...