At some point we lost some of the little hinges for this litter box. The purchase price is not that high, but shipping costs are. So I convinced my wife to let me buy a 3D printer to make it ourselves. And one year after buying it, I did :D
It's hinges (the little sticks) for this litter box: https://www.makesurepet.com/en-eu/products/litterboxmax
The model contains one hinge. Surprisingly, it printed very well multiple times without tuning settings specifically. No brim should be needed, but this heavily depends on your bed adhesion.
The author marked this model as their own original creation.