One Stone - three Birds
Lets combine the daily shower with the laundry process to save valuable resources.

Solution

We place a horizontal extendible washing drum right under the shower. The heated water with the detergent from the shower is used twice. First it cleans your body and hair and then it cleans your laundry, too. The washing drum will be set in a rotating motion just by muscle-power of the person in the shower. This enhances the cleaning-effect.