The release nubbin on our washing liquid tray wore down and no longer latched.
This glue-able collar raises the clasp and adds some structure to the bottom side of the original part.
You could also repair this with building up a profile with superglue and baking soda, but this felt longer lasting.
I get this is super specific, but i would have smiled if someone else's solution had popped up when I searched for it, so here you are!
The author marked this model as their own original creation.