I somehow lost a pin from one of the hinges in my war crate (maybe it broke?). Without it, the crate had no shape and was unusable. So I designed a replacement pin!
The pin has a small notch on the end to prevent it from falling out. There's a flat side to make printing easy, no supports/brim/raft needed! I found it easiest to push the pin into place when the box was slightly collapsed/folded on itself, rather than in its final form.
Hopefully you don't have the same issue I did, but if you do, this worked for me!
EDIT: uploaded a new STL file with the orientation set for the flat side down
The author marked this model as their own original creation.