My sister-in-law works for the cath lab at a hospital, and came by last night with something interesting. It was an insulated box which she said the hospital receives refrigerated medical supplies in, and they just throw them away. It was a cardboard box, that had removable insulation, and two very heavy duty ice packs which were still frozen despite sitting in her hot car all day. The ice packs are perfect for the built in cooler on my Stratos, and are the equivalent of a bag of ice. These could also be put in the live wells to keep the water cool. I removed the insulation from the box, trimmed it to the size of my cooler and live well lids, then stuck it to the lids with double sided foam tape.