Some basic organizers for the Board Game Sanctum. I improved the card holder from grzlus's insert, https://www.thingiverse.com/thing:5149209, which was designed for sleeved cards. This should hold the default cards tightly when all the cards are in and they should not slide out. If they do slide out then you may need to print the box slightly smaller.

Print 3 of the large boxes and 2 of the small.