While waiting for the magnets and laser module to arrive, I thought to experiment a little bit with 3D printeded lithophanes.
I found on Thingiverse a lithophane of The Great Wave off Kanagawa made by utoudabi:https://www.thingiverse.com/thing:2497763
I printed it using white PETG. This is what I got:
Also found a great tool to generate lithophanes from images:
The tool is open source, so I think we should be able to get it running on the Raspberry Pi: