As for baby food, bring the smallest sized jars. Dispose of any leftover baby food or formula after feeding. Use clean, empty milk cartons to freeze blocks of ice or use frozen gel-packs. Fill the cooler with cold or frozen foods. Pack foods in reverse-use order.
First food packed is last to be used.
In the car, put the ice chest in the passenger section. At the campsite, insulate the cooler with a blanket, tarp or poncho. Safe Water Water is always an important consideration on a hiking trip. You'll need it to drink, make food and wash up. Purchase purification tablets or equipment from camping supply stores, and learn purification techniques.