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I plan on putting the towels in my dryer and let them heat up for a bit. Â I wonder if you put warm towels in an ice chest....would that keep them warm for an hour? Â If not I may hop out pull them out of the dryer and hand them out. Â Someone has to sacrafice their body......
also, you can make cheap heating bags by filling socks with uncooked rice and sewing the top and throwing them in the microwave for a couple of minutes. I think if you start out with warmth in the cooler it should keep for some time.