This year my goal is to focus on designing more complex assemblies that rely on gears, joints, or parts that leverage the flexibility of the material itself to its advantage as in compliant mechanisms. https://en.wikipedia.org/wiki/Compliant_mechanism
This part is very specific to my sink, although I could probably rebuild this so the ring clips utilize the flexibility of the material to expand or contract allowing more generic fits.
It’s ugly, I know, but functional. The main exercise here for me was to design pieces that snap together, with the correct tolerances for my machine.