DIY Ice Packs with simple ingredients you probably already have. These stay soft, so they easily mold around a painful knee or other aches and pains.
Make Your Own Gel Ice Packs — How many times have you used gel ice packs in your life? Their uses are almost limitless: from medical applications to keeping your sandwiches cool, gel ice packs are handy to have in the freezer.
Here are a few different options for having ice packs and bags on hand for first aid as well as frugal ideas for keeping your lunchbags and camping coolers nice and chilled.