I wanted to play around with Tinkercad and I made a box insert for the game “Munchkin”. This fits the box of German “Munchkin 1+2” (I do not know whether other boxes share those dimensions or not.)
There is also a small space (8 mm wide) to fit additional cards or small counters.
In contrast to other inserts, I had three design goals:
I've printed my copy using Prusament Recycled PETG using 0.2 mm layer height and 3 perimeters. No brim or supports are needed.
The source Tinkercad project can be found here If you want to play around with it and improve it: https://www.tinkercad.com/things/jHG0fbKLt8c-munchkin-insert
The author marked this model as their own original creation.