Interesting idea. Or maybe it could just be made out of a harder silicone? Or maybe stainless steel? Though I guess both of those would have an additional pr

Interesting idea. Or maybe it could just be made out of a harder silicone? Or maybe stainless steel? Though I guess both of those would have an additional problem: You can't see what's in them. In our family, something going into an opaque container in the fridge is nearly guaranteed to end up getting thrown away, though in particular that's a problem for ingredients (rather than prepared foods): if I can't see the chopped onions or half can of crushed tomatoes, I'm gonna forget to use them.