Had mine for a couple weeks now. Commenting in hopes someone else has some suggestions. Also, search thingiverse or cults3d for Cathedral. Looked like an interesting game.

One game that I'd like to make sometime is Micropul which is an abstract for 2p or solo. Image search showing some printed examples but wood burning is another possibility.

The multi-model version of sovereign chess.

https://steamcommunity.com/sharedfiles/filedetails/?l=german&id=2393489194

Also I just really like sovereign chess, it's fun to conquer nations as part of the gameplay

Hextraction seems like it would be pretty fun. Haven't tried it myself yet, though.

HIVE!!! There are loads of versions of Hive tiles you can print and its a wonderful game. If you want to go insane, get into Gloomhaven, and start down the path of printing every monster and obstacle in 3D, and you can go insane like me!