I designed this Magnetically Interlocking Calibration Cube in SOLIDWORKS for the Printables Models with Magnets contest (07/004/2023).
There is print files for:
You can also edit the dimensions of the cube and the magnets holes in Prusa slicer itself or in the original SOLIDWORKS file.
Because my printer is working overtime, unfortunately I have printed only one example (to follow).
Enjoy!
The author marked this model as their own original creation.