This is complicated, you guys. I was hoping not to have to explain it...
I live in a 150 foot converted backyard shed. There is an unusable mobile home from 1967 on the property. It rains inside, you can see outside the floor to the grasses, there are no windows and the door is this broken metal thing sagging off the hinges. The toilet, tub and sink in the bathroom is functional when I have the water turned on.
My water is rainwater for the most part. When dan is here we have running water, but when he leaves I will turn it off again.
I do not have propane or an electric water heater, an oven or even a stove.
I do have a lot of wood to burn in the firepit - stuff i collect for free.
I have: a microwave, small hot plate, crockpot, toaster oven, coffee pot, dorm sized fridge, electric tea kettle and a outside firepit that i sometimes cook on.
So, to heat water for that tub i would have to figure out some way to heat water in either the shed or the firepit, collect some kind of kettles to put the water in, lug lots and lots of HOT SCALDING gallons into a tub in a structure that I do not live in...and, when dan leaves, it will all have to come from my rain barrels.
This is not an earth shattering problem.
It's an interesting challenge that I am choosing to document my experiences with.