I have a nearby river running through my yard. In a SHTF situation, would it be a good idea to have a large cooler of some sort to plop down in the river to keep drinks and foods cool? I'm interested in your ideas on such a thing. I just started thinking into today so anything you come up with, I would like to hear as I haven't had time to put too much thought into my idea just yet! Thanks guys and gals!