Storage for your dry erase markers and erasers with captured magnets. This version fits markers of various sizes with a single eraser of typical size. I also used captured magnets that are inserted during the print in a vertical orientation. There is little risk that the magnets will jump during printing and they provide a very strong grip.

The 3mf file includes a pause at layer 327 to insert the magnets. The magnets that I used are: https://www.amazon.com/gp/product/B07QWMHGHZ