Moon

Here is a moon with a hole on south pole.
Inspired by Leung Chan https://www.thingiverse.com/moononournation/designs

I couldn't have a proper print from his model so I did it myself with blender using a big subdivision on a sphere, and use a heightmap of the moon on a displacement modifier.
That's why the file is that big.

I exagerate the displacement so it's not realistic, the elevation is exagerate so we can see craters.

I recommend to use support because it's a small surface on the plate, so movement can cause a detachement. I had no problem printing it with support at 75° in Cura.

My print on photos is printed at 0.1, infill 100% if you want to light it up, because it's a shell. If you don't plan to light it up, infill as you wish. Support at 75° touching buildplate only, it took about 16h30 on Ultimaker S3. You can print at 0.2 so it would be 8h instead. I think you can scale it at will. On my photos the print is 60mm diameter.

Here