This insert prints quck and easy and makes shure the cards don't shuffle around when you carry the game around.
With 2 Wall lines and 2 botttom layers (no top layers needed realy as it tapers in on the top) it prints in 1.5 h on my ender 3 V2 (50mm/s) and uses around 31g of Filament.
the Version 2 works for sleeved card as well.
If you like a more sofisticated design and don't mind using a lot of filament on it check this one https://www.printables.com/model/484947-vaalbara-bordgame-insert by bennydesign.
The author marked this model as their own original creation.