** [I'm no longer posting any new models of updates to Thingiverse. Please check out my page at https://www.printables.com/social/48520-fuchsr/models]**

UPDATE: Added a version for sleeved cards. You'll need two trays to hold all sleeved cards from the base edition.

I didn't like any of the inserts/card trays for Exploding Kittens, with the exception of https://www.thingiverse.com/thing:1957634, which itself is a remix of https://www.thingiverse.com/thing:854289. But it's too small, and the tray can move around in the box.

So I first widened it a bit, and two trays fill the box now in its width but they can still move around along the other dimension. Next, I was playing with adding a "hump" to the back of the trays to anchor them in place but eventually I just went with a small lip in the front, which I think looks nicer and uses less filament.