Adventist Youth Honors Answer Book/Camping/CampShower
Most outdoor outfitters carry camp showers, but the trick is setting up a showering area that will provide clean feet and privacy.
Clean feet can be had by building a platform similar to the table shown above, except that it need not be lashed to any trees - it can simply lie on the ground. If you do not build a platform, you will create a mud hole when you shower, and then everything will be clean except your feet. Somehow the mud on the feet have a way of migrating elsewhere too, rendering the whole showering experience an exercise in futility. Don't scrimp on the rope when attaching the spars to the poles - the platform must be secure and stable, and the spars must not roll around. Lash them down securely.
For privacy, you can bring a tarp, and string up an enclosure using trees for support. Make the enclosure large enough to hold a chair so the freshly cleaned Pathfinder can remain freshly clean as he/she dries off, gets dressed, and puts on his/her shoes.