I go camping pretty much every few months and I have always wondered if there was a way of getting hot water without boiling it over a fire! I found a DIY portable water heater that you can make for around $10 and can be folded and carried in a backpack, suitcase, car or boat!
This could be used to have a shower or to wash. Even better, if you were bugging out, this would give a much needed moral boost to get you going again. See how to make it below.
(Picture Credit: motherearthnews.com)