Hello, FList!
When we lived near a co-op, we got a lot of things in bulk and hence used these rubber-seal glass jars a lot:
Now we are no longer near that co-op and haven't used these jars in a long while. Would you like them?
Note that one of them is plastic. It's the most square of them in this picture. The yellow one isn't glass, it's ceramic, and it's got one of those suction-seal lids that you activate by twisting the top.
Free to a good home (and the cost of meeting me to get them).