Dice box that holds a set of 6 dice of 16mm using a 5mm diameter, 3mm thick magnet. The file is symmetric top bottom and two should be printed to make a box.

3d model can be found here:

https://cad.onshape.com/documents/24a28dcda6e86b53a4355be3/w/12328529c51f51137c5b8a5b/e/c5c6a89af52f0ce606ecba0f?renderMode=0&uiState=65aeec6bf164bb470dc6bdd1