Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4644317.

I searched far and wide for replacement clips to hold my Caroma toilet seat to my toilet fixture, and to no avail.

Plumbing supplies confirmed that I'd need to buy a whole new toilet seat ($100+ to be equivalent).

So I measured, modelled and printed two of these - and they fit and function perfectly.