This is a replacement latch for the top/lid of an enclosed Van Ness litter box. 

Certainly isn't perfect but is surprisingly functional and has held up over the past 6 months of use (i.e., removing the lid for routine cleaning, lifting & moving, etc.). 

I printed this in Prusament Vanilla White PLA to color match it to the lid as well as I could. No supports or special settings needed. I believe I printed this with a 0.6mm nozzle too so a 0.4mm nozzle might make this function even better. 

Feel free to adjust or improve - the Fusion 360 file is attached!