do you feel like getting into 3D printing?
there is a wide variety of programs for modeling/designing 3D parts.
the usable ones are all commercial but some of them are free of charge for personal/student use (Fusion 360 and others by the same company). there are free/FLOSS ones but they’re 1-2 decades behind in usability (FreeCAD/LibreCAD), or plain can’t do what a commercial program can do, and you’ll hit those limits if you do anything that’s more complex than a fractal (dunking on OpenSCAD here).
if you can scare up a mechanical model/schematic or even just a schematic of the PCB plus some manual measurements…
your linked post says the OAK-D-WIFI is incompatible with the enclosure for an OAK-D (no-wifi) but the STEP file would be a base one could modify. depthai-hardware/Mechanical designs/OAK-D at master · luxonis/depthai-hardware · GitHub