This is a replacement lid for the game Exploding Kittens because my dog ate the original box. I used this insert to hold the cards and designed this lid for the box.

The OpenSCAD file is attached if you want to make modifications or use another insert available as the bottom of the box - just change the box size dimensions in the file. I'd recommend changing the gap variable to 1mm (0.5mm on each side) because the current 3mm is too loose. Maybe also reduce the lid height (l_z) to make it easier to remove if it's a tight fit.

I also added an inset logo, so add a filament color change if you want it extra fancy.