Locate the taps and adjust the temperature and flow using just your tactile senses. Make sure your balance is good before you try this and use common sense to avoid burning or injury. In the shower locate all necessary props by feel, then wash, shave, and so on, with your eyes shut. Your hands will probably notice varied textures of your own body you aren't aware of when you are "looking."
When you are showering, use a variety of sensory stimuli—aromatic bath oils and soaps, sponges, body scrubs, candlelight, champagne or tea, music, plush towels, and moisturizer. Luxuriate in a cavalcade of scents, textures, and lighting to create linkages between old and new associations.
Stimulate Your Brain
Certain odors evoke distinct (alertness and calmness) in many people. By pairing a specific odor or music with an enjoyable, relaxing activity, you form a useful stress-relieving association that can be tapped simply by smelling the aroma or hearing the melody again.
Even though it is probably the least intrusive or time-consuming brain training suggestion, this shower exercise can effectively exercise your brain.