just commented on your other green ring. this would be a good design for shapeways too, please upload either one or both to it (i mean the entire set, not just the individual though. all of them are fantastic)
I'm pretty sure I could make it given enough time, but I don't think I could make a bulb and power source small enough to fit in a real one. If I were to make one I'd probably just make the lens a solid glass (or transparent) marble with no light.
I tried that. The dimensions don't work out for a 3mm LED and Li batteries. Still too big. It would have to be a rice grain bulb, which probably wouldn't be very bright. There's still the problem of most commonly available batteries being too big.