The original 3D Benchy Keyring has been amended to have a place to fit some magnets to the back.
The holes fit the 8mm skinny neodymium magnets and are a fun addition to any fridge. Because they're the skinny ones they aren't super powerful but more than enough to hold benchy up. I superglued mine in, but I'm sure some normal household glue would probably work too.
Thanks @ravingDIODE for making the original keyring :)
The author remixed this model.
Amended to add some space for magnets.