Way back in the 70s, before I bought my first house, I lived in a caravan in a disused quarry for five years.
Rainwater ran off the roof into a tank. (You haven't lived until you've tasted coffee made with rainwater.)
Gas bottles, cooker, gas fire for when I let the woodburner go out.
Lack of electricity was probably the most difficult.
I had a little portable TV and a car battery. To keep the battery up, I made a generator from a lawnmower engine and a car dynamo. The worst thing was having to go out in the snow to fire up this “generator” when the TV picture started to collapse into a small square in the middle of the screen.
Car radio, gas mantles, candles... all mod cons.
Girlfriends loved it. Trés cosy
So did my ginger cat ;o)