Baby Monitor Shelf & Mobile holder

I made this out of necessity: I needed a shelf for a Baby Monitor/Camera - and we had also bought a (sectional) Baby Mobile which connects to a crib,,, but the Baby will be in a Moses basket for the first six months and the Mobile won't attach to it - so I came up with this to solve both problems.

It's my first real design - made with TinkerCad - so be kind to me...

The internal hole for the Baby Mobile is 22mm - the actual pole is 20mm, but I allowed some for variations in Printing - I