My husband has gotten so he buys these huge jars of sour pickles from a local wholesale food company. As a result, I have half a dozen of those huge jars I just can't throw away, and he will be buying more in the years ahead. Are these jars suitable for any type of reuse in canning or pickling? What special precautions do you use? Right now, we're saving change in one of them, but we have lots more.