- 1). Unfold the top of the box so the opening is accessible. You can cut the top flaps off with scissors if you don't need to keep the cooler closed.
- 2). Line the box with a trash bag. If the bag is too big for the box, tie the excess plastic into a knot around the edge. This helps keep the bag in place and keeps the excess plastic out of your way. Double the bags for added water proofing.
- 3). Fill the box halfway with ice. Sprinkle salt over the ice in a fine layer. The salt helps the ice reach maximum coldness.
- 4). Lay another layer of ice on top of the salt to protect the items from getting salt all over.
- 5). Fill the box with items to keep cold. Fold the lid down for added insulation.
- 6). Replace beverages as you drink them to keep a constant rotation of cool drinks.
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