For Birdscapeing (rules available at BoardGameGeek), I designed myself a box, that doubles as card holder during the game, and the player area grid. I used OpenScad and Inkscape for the design, then printed everything on my Bambu Lab P1S.
This is the whole package:
I tried to replicate the water color look of the rule's logo in my inset:
Opened up, you see two stacked card trays, and the player grid markers, as well as a custom layouted version of the rulebook, that fits into the tray:
The two trays have been magetised, as has the lid:
When playing, the two trays stick together as one long tray. The middle row of cards is fully covered by the grid marker, the top and bottom row just have a small corner:
All the colored inserts were printed separately, and only glued in after having been painted and varnished.






