You can easily create your own custom 3D jigsaw puzzle within PrusaSlicer! This guide includes the whole workflow.
I was inspired to create 3D jigsaw puzzles by this article on Prusa Blog. However, it was originally written in 2019, and I found some

Organic supports in PrusaSlicer are called tree supports in other slicers - and they really do look like a tree trunk and branches. This inspired me to model a Benchy tree, entirely within PrusaSlicer. The trick is to adjust the supports so that they