The oven bag I already carry in the PSK is used primarily as a last ditch effort at Transpiration. I'm in thr process of adding a clear 3 mil 50 gallon bag to my Always carried gear. In addition Foil would be a great plus to my kit. I would ude it for making containers, pots, bowls, fishing lures, collecting rain water, fire proof base, and most importantly to collect dew from the desert changes in temperature.<br><br>As to the packing Doug must have some secret formula.