I wouldn't be surprised if he did, I mean, this is the exact thing he described in the books!
In terms of puzzle rings, I'd say start out with 4 bands and practice with it. If you like it, graduate yourself to 6, or even 8. I got all of mine from Renaissance festivals, but this conversation convinced me to order one from Amazon not even half an hour ago, so, when it comes in, I'll let you know how it goes. If you're curious, here's a link!:
https://www.amazon.com/dp/B08H5R8KPY/ref=cm_sw_r_apan_i_QR28S93M5HHH822RJZ3J