Two trays that hold the sound and experience tokens for Zombicide. They fit together to form a box for the pieces.You can either print the STL's provided or generate your own with the scad file. To change the friction fit adjust the tray_fit variable. It's the gap in mm between the two trays when fitting together. Negative values are acceptable if your gap needs to be negative.If you don't like the idea of friction fit, then you can put a large value for tray_fit, like 0.7, and use a rubber band to hold them together.If you make any derivatives for different games be sure to upload the STL's for people who don't use OpenSCAD.This is for the game Zombicide that has just come out. guillotinegames.com/en/