Handheld shower heads with adjustable mounts are the way to go for universally-designed showers. No matter whether someone is standing or sitting, users need to be able to adjust and reach the shower head without difficulty. This also helps with washing those difficult-to-reach places, or even for cleaning the shower and washing the dog. Consider multiple shower heads for the greatest flexibility of use. Hardware should not require any pinching, twisting, or grasping for use (levers work well).