So I've got a mobius ball but figured I could make them. They're little toys that you just keep folding the rings in and in ad infinitum or out and out ad infinitum. Normally I see them as solid steel or aluminum but I saw ring lord was selling 12G 3/4"ID anodized aluminum in a variety of colors and figured that would work for rainbow balls. I will be selling these at MFF if people are interested