If your outdoor shower is not attached directly to the outer wall of your home, you'll need some sort of structure to hold the plumbing and fixtures. It can be as simple as a vertical wood or metal pole, set about a foot into the ground and secured with concrete. Or you can build a wall of weather-resistant wood or tile that is 3 to 6 feet (0.9 to 1.8meters) wide, for example. A wider wall may allow you to add pegs and hooks for hanging clothes and robes, and hang caddies for soaps and shampoos. Of course, be certain to always use eco-friendly bath products outdoors, so you don't violate municipal regulations regarding gray water drainage.