The AdaFruit MagTag is great for displaying info, such as the weather, Twitter stats, etc. This case, modified from the files on AdaFruit, will let you mount them into the Honeycomb Storage Wall by RostaP. I widened the screen opening just a bit and removed an overhanging part that was meant to obscure the side buttons.
3MF files include a front plate, mid plate, and 2 back plates (one for portrait, one for landscape). All can be printed without supports.
Assembly:
The author remixed this model.