Customizable Earring Tree

Update
29/01/2020: My wife wanted something easier to hang her chains on, without having to clip them around the existing closed hangers. This is a simple addition that allows her to just hang them over the ends.
Earring tree Chain Holder v7.stl

Summary
My wife has quite a few earrings and rings and she didn't have anything useful for storing and displaying them. Jewellery boxes just got filled up and then never used. She would end up just leaving them out on the counter so she would know what she had. They would end up getting all mixed up, lost or a tangled mess.
I designed this piece to be practical, adjustable and functional. It is made up of 3 different rings. The base can be used to hold rings or other jewellery, each ring can hold earrings with hooks or other fasteners that can hang over a lip, and one of the larger rings has outside holes where studs can be inserted. It has 2 sizes of spacer, 25mm and 50mm and also an additional m/f design of 25mm and 50mm that can allow