Water is one of your most important preps, without it you can only last 3 days. Having alternative methods to purify your water is an excellent idea. Desertsun02 has come up with a very inexpensive way to make a homemade water distiller that can be powered by your electric stove, rocket stove or a campfire. A water distiller can not only purify your water but it can also turn salt water into clean drinking water. So check out this excellent video below and if you decide to make one I recommend using a stainless steel kettle that can withstand higher temperatures, in case you should have to use it over an open flame.