I designed this box insert to fit all of the Catan upgrades that I printed. The box will now fit the following printable pieces as well as the original game pieces.

Catan Holder with Slide Box
https://www.thingiverse.com/thing:3938456
Multi material catan robber
https://www.thingiverse.com/thing:3765544
Catan largest army trophy
https://www.thingiverse.com/thing:2349867
Catan longest road trophy
https://www.thingiverse.com/thing:2349876
Settlers of Catan: Tile holder
https://www.thingiverse.com/thing:69484

I also integrated the Catan tile holder storage into my design
https://www.thingiverse.com/thing:2150592

I have added a new version of the sea port holder, apparently the newer sets are thicker