I did not see the other remix with a magnet until I already edited the original, so here is mine. I added a magnet hole for a 6mm wide 2mm deep magnet. The opening is 6.2mm by 3.1mm. I added a drop of CA glue and voila! Printed with Elegoo Galaxy Purple PLA.
This is my first remix post, so if I screwed something up, let me know!
The author remixed this model.
Remix of the original with a 6.2mm by 3.1mm magnet opening