Replacement latch for one of those very large totes with the handle latch that rolls over the lid (see picture). It's a bit hard to put in without pinching your fingers but just put one end in one side and pull the other side in as gentle as you can and go from bottom up to the hole.

seems to work okay. Don't print in PLA or it will probably snap. ABS may be better. I printed mine on the top side.