Minimalistic case for the Adafruit MagTag

See my blog post for how this was used in my case. To assemble, you will need

• 4x M3 x 16mm screws, for example RS 281-013
• 4x M3 5.5mm nuts, for example RS 527-230
• 4x 20x2mm metal disks as magnet-counterparts, for example these ones. 

The metal disks are designed to be embedded into the bottom half print, so make sure to add a printing pause in your slicer.