I have modified the Khadas VIM Case V2 by daviddawe1982 using Blender to fit my VIM3L + M2X.
It’s not a great modification, but it slices in Prusa Slic3r, prints well and works perfectly.
Also modified the buttons
The vent holes are handy for the SMA bulkhead sockets for 4G/WiFi aerials!
I haven’t got around to publishing them, but let me know if you’re interested, and I’ll have a go at uploading it to Thingiverse as a remix.