This is a separator/holder designed to clip on a shelf to provide better holding position with improved rigidity.
I did not like the classic L shaped bookstand and didn't want to risk having dozens of CDs falling from the wall so this is the solution I came up with.

This is designed to pinch a 19mm thick shelf, the fusion 360 model is provided for you to modify to your needs.
It is designed to print without support as shown on the picture.

Happy printing!