Box insert for Tiny Epic Cthulhu with no expansions and no sleeves. I wanted to create a more intuitive design than the existing offering at https://www.printables.com/model/1525437-tiny-epic-cthulhu-deluxe-edition-insert. It's a difficult box to pack, so I'm not sure I succeeded, but maybe this one suits your taste better.

The "BaseCorner" pieces can be applied with a small amount of Elmer's or hot glue to keep them in place.