This is a case that will fit the Lilygo T-Internet-POE board, I am using it for a bluetooth proxy for Home Assistant. But made it with other uses in mind as it has an opening for the TF card and the USB-C connector, so those can be used also. I made this case with enough ventilation so that there wouldn't be any heat issues, I was unable to find a case that it my needs.
This is a snap fit case so no screws or other stuff is needed, it snaps fit tight and holds the board firmly.
I am including the Fusion 360 files so you can modify for your needs.
The author marked this model as their own original creation.