Great information. Thanks. I made a grocery bag out of a large bird seed bag. You can also make them out of dog food or horse feed bags too. They are already "coated" with a moisture proof lining, so to speak, and are fairly sturdy plus they have nice designs on the outside. I just cut them to size, box the bottoms and add webbing handles. My neighbor uses hers all the time. Have to make a couple for myself now.