While browsing printables I found a few neat designs for magnetic dry erase marker organizers, but none that fit my exact needs. I decided to try and put something together in Onshape that matched both my requirements and my available magnets. This was the result.

It's a simple design meant to hold 5 dry erase markers (the larger thick line versions).

Printing

Prints great in PLA with no supports I used Voxel PLA+ at 10% infill and .2mm layer height Magnets

The holes are designed for 6 of these 12x3mm magnets A bit of super glue and just push them into place