This is an insert / organizer for Furnace with the Interbellum expansion. It all fits in the base box, has no lid lift, supports premium sleeves on the cards (Dragon Shield matte sleeves shown in the images), supports vertical storage, and was designed to aid setup and teardown. Here are some features of the insert.
To achieve the insert as shown, print two of the Option 1 resource/money token trays and one of everything else. If you prefer to have the money separated from the resources, I also provided files with “Option 2” in their name. Print two of each of those instead of the Option 1 file. Option 1 provides a bit more room than Option 2.
The images show how to layer everything in the box, as well as providing closer images of some of the trays.
I have included the original OpenSCAD files in case anyone wants to improve on the design.
The author marked this model as their own original creation.