This is a Wall Hole Cover Plate to cleverly close holes in the wall. The advantage of this model is that it is completely customizable - you can specify the exact diameters and sizes in the MakerWorld Customizer and then download the model.

In my case, I needed this to close a hole for my electric car charging cable on the shed.

I found this blind hole cover on Thingiverse as I couldn't find anything suitable on Makerworld. I optimized and modified the OpenSCAD code a bit so that it has a more aesthetic coverplate from my point of view.

If you have further requirements or ideas for the model, I will expand it further and publish the code here! :)