Simple yet effective Magnetic Key Holder. Model has 2 options for the part that connects to a keyring.

I used 10x3 mm magnets ( https://amzn.to/4bqu8N8 )

For the wider attachment I used Keychain Cables ( https://amzn.to/3UAvTjU )

For the skinner attachment I used KeyRings ( https://amzn.to/44AtgmI )

I use command strips to hang the holder ( https://amzn.to/3Uxwa7h )