Terraforming Mars Deck Holder - all expansions, fits in box

thingiverse

This slanted deck holder has enough room for all the Project Cards for the base game, Venus Expansion and Prelude Expansion, with a bit of room for Colonies when that arrives (if not, give it a bit of a stretch in your slicer of choice). Even better this fits in the base game box along with all the boards for the base and expansion, due to the slanted design, which also makes drawing easier. I printed this with a Creality Ender 3, default "Low Quality" setting with additional "Hollow Object" and "Spaghetti Infill" settings checked.