Magnetic Slug

This is a fun little critter that 8ran has made. All it lacked was a magnetic personality so it could stick to the fridge.
My TinkerCAD file ....
https://www.tinkercad.com/things/cBD2I7B0AEe-slug

The magnets are 6x2mm.
https://www.ebay.com.au/itm/N35-50-100Pcs-Strong-Block-Ring-Round-Rare-Earth-NdFeB-Neodymium-Fridge-Magnets/142658146914?ssPageName=STRK%3AMEBIDX%3AIT&var=441639981019&_trksid=p2057872.m2749.l2649
A bit if SuperGlue in the hole, press the magnet in and wait for it to dry.
The magnet hole may be a little large but the slug can be scaled to change that if needed.


Updated...
Here is a mod :) https://www.thingiverse.com/thing:2867299