These are cases for the I2CDriver (https://i2cdriver.com/) and SPIDriver (https://spidriver.com/).
They should fit snuggly into the cases, even with the rubber feet on if they are not too close to the side. Minor retouching might be required depending on how the connectors are soldered on or where exactly the display is glued down.
I glued both parts down with contact glue.
I printed this on 0.20mm speed settings.
The files "top_*.stl" are the the top parts. The part "bottom.stl" is the bottom and is the same for both boards. The parts "i2cdriver.stl" and "spidriver.stl" are both the top and bottom parts together. The part "i2cdriver_spidriver.stl" are all files for both boards.
The author hasn't provided the model origin yet.