Thanks for the info, Richard. Looks like it was a fun project.Thanks all for the nice words.
Jim, all the baubles are glued to the outside of the plexiglass wheels. I used some clear epoxy judiciously, so that it's transparent when viewed through the scope. It may yellow over time but the layer is thin enough that I think it won't matter. There's no tumble cell though... It's two wheels of plexiglass with jewels/baubles glued on. They can spin independently of each other (they're on miniature R2 bearings) and that creates the infinitely changing mandala.