A bit different take on the fairy doors: a Cthulhu Gate. This was made by a request from a friend of mine.
There are two files, main one that's got solid back wall and secondary one that has holes cut on it to let light through. I tried to include some space for LEDs back there too but fitting a battery on the default size is going to be bit of a challenge if the model is placed against the wall. Once again I'm limited by my small print bed to actually test this better.
You can also scale this down by about 50% max when using default 0.4mm nozzle, under that the back wall won't print for me at least.