Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5253738.
This is an insert I designed for the game Aquatica by Cosmodrome Games. I drew inspiration from the insert designed by js5002 but ultimately designed this from the ground up. The player boxes hold all of the starting player cards and manta rays. Every box has a lid so it can be stored vertically and nothing will move around, and there is no lid lift. Designed for sleeved cards, though I haven't tested the sleeves on the locations cards yet, but theoretically it should fit.
I decided to try something fun and gave each box a custom lid to indicate the contents. Every box lid is the same size (except the locations cards), and if you don't want unique lids print the "generic lid". The lids are designed with a .12 mm design on top, and thus print best with a .12 layer height. The boxes can all be printed with .2 mm layer height.
Update 2/28/22: I finally found sleeves that fit the locations cards: Swan Panasia 50x100 (Fit Odin's Ravens and Tribune). They need to have about 10mm cut off the end, but they fit perfectly and fit in the card box. It is a very tight fit, and the cards need to be compressed, but they fit for me. If they don't, then print a second location box/lid about half the height (z) and that should be enough to fit the rest.