What is this called where they make tiny worlds?
There is something magical about this. So much more detail than a doll house.
Examples
A tiny artist studio with a lovely skylight.
Often they use recycled material like this one uses packaging from a cellphone for the base and often we see egg cartans for texture.
And here we have a little fantasy house from a toilet roll
And a coffee shop of dreams inside an old plastic jug.
I bet a lot of these materials could be replaced with more upcycling like paperclay.
I've seen techniques like this for model railways and DnD terrain. In painting, we might make
maquette to help with realism. But they all have a purpose. This seems to be making a tiny world for the joy of it. Nothing beyond that.