Use plastic lids and Mason jars to store food and other things

You can't use these plastic lids for canning (they don't form a tight seal and wouldn't survive the high temperature) but they do a fine job for storing food or other things in Mason jars. Amazon sells 16 wide mouth jar lids for $10. And you can buy wide mouth Mason jars in a several different sizes, from a half-pint to a hald-gallon.