Some say necessity is the mother of invention... Well, here there was only necessity because nothing got invented. :)
The need arose when old clothespins' springs started breaking, but the metal clip was still perfectly usable. So, instead of buying new clothespins..., I quickly whipped up a model to fulfill that function.
Turns out not all clothespins were created equal, so print the model that fits your clip the best.
PS: Don't use PLA.