Magentic Key Ring

A small magnetic key ring.  Perfect for hanging your keys on a door or to hide a key out of sight.  Or print 2 and stick them together!

uses a 10x10x10mm magnet (mine actually measured 9.36mm cube)

Print it in the orientation it comes in as for a support-free and strong print.  It should be a snug fit and not require glue, but you could apply some superglue before inserting the magnet.