I made this as part of my Broke project, an open source alternative to Brick.
If you liked this project, please consider buying a Brick - it's a cool concept.
This model can also be used as a generic way to carry around NFC tags - I included a logo-less version of the top part.
This model has two parts: Top and bottom.
The two parts snap together, with a hole that allows to seperate them later on using a screwdriver.
I also added a parametrized version if anyone's interested. I originally made this much bigger, with 4 magnet holes, so there might be some funky parameters over there :)
The author marked this model as their own original creation.