Rotating Necklace
I printed this at 80% scale. PLA 0.2mm layer height.
It should be printed with no supports and no raft.
I have not put the work into it to actually make this a customizer.
You can print multiple units and the small insert can be used to chain multiple prints together.
It was designed with 2 rotating joints so that it could bend in every direction.
Although I designed it as a necklace, it ended up more as a fidget device. It is very satisfying to move it around in the hand.
Try printing it at various scales. I am not sure how small you can make it.