Scaled models of buildings from the game Satisfactory. With optional holes for 6x3mm magnets (here are the magnets I used). You can use them with a whiteboard for a more tedious but tactile factory planning experience! Fun to look at, especially for kids. My favorite so far is the Coal Generator.

I will add more models as I have the time to tune them for printing. Some of the existing magnet-holed models need some tuning too.

General print settings:

Infill: 10%

Supports: Strategy depends on the model. You may also have to manually add supports in a few places (the satellite dish on the Awesome Sink for instance or the motor-area of the Coal Generator). Cura has a good plugin to do this. I've tried to add a brief note to each file summarizing what support strategy worked for me. Since the models are small, a higher minimum overhang (like 70-85deg) can work.

Resolution: 0.2