First of all, how cute is this fabric? I can't get over how adorable it is.
We made Wonder Boxes at Enrichment this week. (Someone else made mine because John is out of town so I had Maggie with me...) You heat up your food, get it to boiling, then put the pot in the Wonder Box and keeps your food at the same temperature to continue to cook it. You can use it if fuel is scarce or to keep something warm or cold on the road.
It was a really easy project. I had to buy 2 1/2 yards of fabric, and pay $4 for the filling. Then you are supposed to get a tub to put it in, but I don't have one yet. Here is a link to more information, the pattern, instructions and recipes.