there is a Facebook site from the NHK,Japans national TV station,with ways to make gear from odds and ends.with the natural disasters that hit Japan like earthquakes people may need to cobble up some sort of item to get them home or to a shelter.the instructions are detailed so rather than just wrapping newspaper around your foot in any old way they show the proper way to make folds that really make a shoe.
one of the really odd ones is filling plastic water bottles with warm water and putting them under a tee shirt with the caps off.then screwing the caps on thru the tee shirt to hold them in place.other stuff is used to keep the bottles against your body.a easy idea is using plastic bags in a backpack to carry water.