That scrawny and seemingly deliriously happy guy is me, demonstrating my shower system. To the ceiling, I've fastened a spanner for the kind of barrels I use as rainwater cisterns and containers for dog feed, and fastened a shower curtain to it. I'm standing in a plastic bucket intended for mixing cement. The shower is a garden sprayer with a shower head attached to it. I boil some water on the propane stove, mix it with cold water in the sprayer, and pump it up. Bibi and Mazunte are playing plumbing inspectors. The towel is just for the sake of not offending the photographer.
I must admit I really don't use this shower much, because it doesn't make me that much cleaner than just using a sponge, and is a lot of hassle to set up.
In the summer I have a camp shower outside, consisting of nothing more than a black plastic bag with a shower head. The sun heats up the water during the day, and in the evening it's reasonably warm. I just strip down, walk under it, and soap myself in, looking at the sunset and all in all really living up to almost every single hippie ideal.
I have, of course, any number of schemes for building a more advanced shower system. Stay tuned to this channel. But don't hold your breath.
Mother Earth News had a piece in 1980 about how to make your own solar powered water heater out of an old inner tube. Today making one could easily end up being as expensive as just buying the Chinese- and purpose-made shower. I never stop being surprised by that kind of thing.