I’ve worn an 8 band puzzle ring for probably 40 years now (mine is silver, not gold) and it does indeed make a good fidget toy. Back in high school I taught myself to put it together behind my back, by feel only, when in school.

A friend of mine in college refused to let me show her how to put it together. It took her almost a full semester during a really boring class to figure it out herself.

I mean, I’d lose it immediately, but I still want it

Not a ring, but if you have access to a 3d printer, I have one of these and I really like it