For ice when camping, grocery shopping, etc. Use as many jugs as necessary for your time frame. If you need ice for a long time, freeze 1 gallon water/juice/cleaned milk jugs filled with potable water. Leave 1 cup headspace for freezing. If you only need ice for a short trip, or extended shopping trip an hour or two away, use the half gallon size. Keep a set frozen in the freezer to grab. This is a mainstay all summer long. Why buy a block of ice to keep things cold. This is recyclable and reuseable.
If you have a cooler for beverages of bottles/cans, freeze water in 9x13 inch cake pans. Pop out and place in bottom. When you get to location, put cans/bottles in and fill with water. Floating ice water will keep things cold for a long time.
By Grandma J from Benson MN
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I can always remember weeks before a camping trip half gallon milk cartons being washed and frozen. They were our "cold" for the ice chests, works wonders!
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