04/16/2009 05:12 am ET | Updated May 25, 2011

Kill Your Fridge For A Month: Try Evaporative Cooling

Project Time: Afternoon.
Cost: Inexpensive ($5-50, depending on materials used).
Energy Saved: High. Can be high if used to replace an electric refrigerator. Can also quickly be made during camping trips or blackouts when no other refrigeration is available.
Ease of Use: Medium. Food temperature will be uneven, and in summertime the box will be considerably warmer than a mechanical refrigerator, resulting in quicker spoilage.

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