Tangential, but does anyone know good places to find other physical puzzles like this? Also, recently there was an article on elastic knots I was hoping someone would productize into a novelty puzzle.
Here's an assortment of links to places where you can buy interesting puzzles. This isn't exhaustive of course: it's just a few places that came to mind.
Tavern Puzzles, high quality metal entanglement puzzles:
https://tavernpuzzles.store.turbify.net/puzzle.html
Craighill. These puzzles are beautiful and double as art objects: