This is a topographical map puzzle of the USA (minus Alaska and Hawaii). I thought it would be fun for school / educational use.

The main model is from https://www.thingiverse.com/thing:634007. I added a base-plate in SuperSlicer and some text I exported from Tinkercad. I then used the processes described in this Prusa article to get a puzzle shape I could use to cut the pieces apart. I decided I did not want to completely follow the instructions as written however since I wanted to be able to print individual pieces which meant I needed the STL file to have the gaps before it came into the slicer. To do this I used Blender to take the difference between the model and the puzzle pieces.