Any recs on a BIFL key chain? Those rings always get bent over time, looking for something sturdy. Might just be a flaw in the design because if you can bend it enough to get a key on, you can probably bend it out of shape over time.
Would using a small carabiner as a key chain meet your needs? They can be quite stylish and are sturdy by design.
I was thinking about that, but a lot of them seem to take the form of a ring (or multiple rings) attached to a carabiner, which still leaves the rings as a weak leak. I imagine you could slide keys directly on the carabiner if it’s not too thick but I wonder if that would have flexibility issues and possibly not be 100% secure.