A quick fix for the broken spring of the latch of a door at my parents' house. I don't know how common is this latch mechanism, but someone may find this useful. Both model were tested and works, but the second is better I think. Of course, none print of these are as good as the original leaf spring, but I think looking for this tiny original part is more frustrating than just printing this workaround.
I printed it with PETG, I don't recommend PLA; it may have the same flexibility at first, but after some time it will fatigue. ABS or Nylon may work, but I didn't test them.

I spend part of my time making these models, letting them available and free for everyone. If you want to support my work, you can contribute with me here: