Summary
This is a storage solution for the board game Agricola: All Creatures Big & Small. The border pieces are separated into 3 trays. Two "border trays" contains 9 borders, for each player, and a separate compartment in the "building tray" that holds the remaining 8 borders for replenishing the board each round. It fits all the pieces, including the two expansions in the box neatly.
The "animal tray" is recessed 3mm so that you can store the score pad on-top, and the game board will sit flush keeping all the pieces in the compartments if you move it around. You'll need to print 1x each of the building, resource, and animal trays. And 2x border trays to make a full set.
It's based on a foamcore solution posted on Board Game Geek by Colin Marsh:
P.S. When I use Fusion 360 to export STLs they're always rotated 90 degrees in the X axis, sorry about that, and feel free anyone to point out what I'm doing wrong. :)