Inspired by a request from my niece who is very active in sports. Designed to keep jewelry safe while involved in sports. Allows her to wear her jewelry to school then protect them by attaching to her gym bag when at practice or a game. All you need is to add a keyring or paper ring to hold closed and keep your valuables out of sight and attached to a larger object which is hard to steal. Also prevent you from loosing your valuables from getting lost in your bag or locker.
I have completed a second version it can be found here: (it has better shape and tolerances)
https://makerworld.com/en/models/24084#profileId-21332