This is a way over thought out thing it seems for a lot of people. Its not like you are stashing rifles and handguns in these things I would hope. I could see somewhere on your property if you have a large section of land and its your retreat in the time of crisis. However, for the average guy trying to get from point A to B it would be better served for other things. You could use small PVC tubes as mentioned to store a change of clothes, $50 cash, pocket knife, map, self upkeep or morale items, and other items along those lines. Think what you could get into a 6" PVC tube that is 2-3 foot long? Your imagination is your limitations.