Mel O’Soup comes in nice wide-mouth pint canning jars, and you’re welcome to reuse them yourself for storage or canning (use new lids for canning, of course).
However, you can also return them to Mel for a 50¢ credit toward your next purchase. Just rinse them out (no need to wash thoroughly, Mel will do that), leave the label on, and return jar and ring (the flat little lid is optional) when you’re ready to buy more soup.
Mel is working with the co-op on a way to return jars there, but for now you can find her at the Olympia Farmers’ Market and return them directly to her.