Could an outhouse be in your future? I realize for most folks this isn’t a pleasant thought but with the right design & finish it might be a good option in some circumstances. Alternatives to outhouses are composting toilets and loveable loos. At the very least knowing what to do with the poo when the water doesn’t flow is a good thing to know.
“Outhouses work every simply: a seating area inside is open to a pit dug into the ground. When solid and liquid wastes are introduced to the pit, natural organisms in the soil, bacteria and insects consume nutrients in the waste material. This helps the waste decompose and form compost inside the pit. As long as the input of waste does not exceed the rate of decomposition, the material will be composted and will not contaminate any local groundwater. According to a Science Daily article written a few years ago, outhouses may be a more sanitary way of eliminating waste in developing countries rather than a installed flush toilet.”
Read more about this Ode to the Outhouse.