Home Made Gel Ice Packs - This is awesome! My back got sunburned so I got one of those huge ziploc bags they have for storing toys and made a huge version of this and laid on top of it. Water, Rubbing Alcohol, and food coloring
When camping, tailgating or going on a picnic, keeping food and drinks chilled is top priority. Instead of using ice, which melts and creates a slushy mess, make your own ice packs using PVC pipe. This is a more efficient method for transport and cleanup.