You need hot water for showering and washing dishes.
Heat water on a gas stove or fire, one pot at a time. Slow. You can also coil a copper pipe around the chimney of a woodstove or just put the line into the coals of a fire.
Heat water with a coiled piece of black hose in the sun. Only works 9 months out of the year, but is effective. Must be drained in the winter. Cannot take showers in the morning, must use hot water in the evening.
A better way to heat water with solar is called a batch water heater. You take an old hot water heater tank that doesn't leak, you paint it black, and you put it into an insulated box with a glass window facing south. This will produce 100% of your hot water for a household in the summer, and 50% in the spring and fall. Must be drained and shut off in the winter. Plans here: http://www.byexample.net/projects/current/batch_collector/
Shower is currently using a propane camping heater. Hot water is currently made on a propane cook stove for washing dishes.