What if you need a cooler at the start of an expedition, but don't want it in the way/to store it for the rest of the trip?
I have used thick multiple/several layers of towels to store solidly frozen food. The longer you want it to stay cool, the more layers you use when you diaper it with the thick towels. Over time, of course, it thaws, but will stay cool quite a while. When you get all the layers of fluffy towels you think you'll need, put it in a cardboard box for protection and a bit more insulation.
Heavy items will compress the towels and lose heat faster on the bottom.
Bubble reflective material can be used, too. Quite efficient insulator, and insulation value stands up well to some weight.
A block of dry ice can be wrapped in the package if you want it to stay cold longer.
What is the advantage? Well, the cardboard box can be flattened or burned, the towels can be used as clean towels,
or put flat under the mattress....
Not a wonderful idea, but functional in certain situations.
I have used thick multiple/several layers of towels to store solidly frozen food. The longer you want it to stay cool, the more layers you use when you diaper it with the thick towels. Over time, of course, it thaws, but will stay cool quite a while. When you get all the layers of fluffy towels you think you'll need, put it in a cardboard box for protection and a bit more insulation.
Heavy items will compress the towels and lose heat faster on the bottom.
Bubble reflective material can be used, too. Quite efficient insulator, and insulation value stands up well to some weight.
A block of dry ice can be wrapped in the package if you want it to stay cold longer.
What is the advantage? Well, the cardboard box can be flattened or burned, the towels can be used as clean towels,
or put flat under the mattress....
Not a wonderful idea, but functional in certain situations.
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