Made this so that it could be affixed on top of the Ring-A-Thing and it works rather well. I printed it in TPU so it would have some give. You may want to make the hole larger for something like PLA or PETG. Made all changes in Tinkercad.

I plan on making more toppers for the Ring-A-Thing since I like the idea so much.

I plan on doing Halloween first, then moving on to a marvel theme, then DC, and where ever else it takes me :P

https://www.thingiverse.com/thing:19154