This is my second attempt to create an insert. As there was no complete insert available for Keyper, I choose this.

The insert is designed to be stored vertically. It was designed for the Huch-Edition of the game (in case it matters)

The number of times each piece has to be printed is indicated in the file name.

As there was a good amount of space available and I didn't want to print the animal trays too high I came up with a solution of 4 spacers below them (see pic with the bag). This way the bag can be stored. In addition, those spacers are designed to snug fit under the animal trays to form a sort of display with the resource tray and the gem trays sliding below. Case someone wants to save some table space :-) In case the holders are not printed and the game box should be stored vertically, a piece of foam can to the job as well.

All the storage boxes are stored in the bottom of the box.

Above the printed storage solution, the rule book and the action board is placed. Above them, the other boards can be stored (see pic). In that way, the box is closed flush and can be even stored vertically without loosing the pieces.

The filament and print time overview is using my setting on an Prusa MK3/S with a 0.3 layerheight and the until layerheight 1.7 only with honeycomb (15%) infill without topper or bottom solid layers.