Round Magnetic Hook

Basic 22 mm round hook holds up to three 8x1 mm neo magnets. Top slot is easier to print. Back slot is a bit higher to compensate for bridging. Also new 25 mm holds up to two 10x1 mm magnets.

Regular screwable version can be found here:
https://www.thingiverse.com/thing:2900472

Flat magnetic hook:
https://www.thingiverse.com/thing:2795134

Magnetic pushpins:
https://www.thingiverse.com/thing:2861703