I designed this replacement retractable gate latch hook in fusion 360 to replace the ones my daughter broke on a gate purchased on amazon. I've had them on the gate for a few months now and so far they're holding up better than the originals which cracked almost immediately under the stress of a toddler.

Printing:

I printed using eSun's PLA+. Originally that was only for prototyping but they've held up so well that I no longer plan on printing them in PETG.

Infill was 20% gyroid, 0.2mm layer height, 210/60 temps printed on an ender 3 v2.