My mother always separates the covers of plastic containers from their corresponding bodies.

Since we have a lot of clear plastic containers of similar sizes, I always end up grabbing the wrong cover for the container I need to close, realising the container can't be closed and spending forever looking for the right one.

I couldn't find a lid today so after failing to force the container shut, I secured it with 2 rubber bands. Unfortunately it spilled on the counter, so I threw away the container after transferring its contents to another.

If one day I find a lid which won't fit any container, I suppose I will have to throw it away too. The gods knows we have enough plastic containers anyway.