I searched the internet for a way to hook up a shower at our campground. We have a trailer, but no running water--just a water tank. I finally came up with an idea and it worked. I got a 5gallon bucket, a watering (flowers) wand, a small piece of garden hose and a garden pond pump. I tied the wand to something(head high) and screwed the hose to the wand and the other end of the hose to the pump. Then I filled the bucket with water, put the pump in and turned it on. I was able to make a shower for around $45. You could use this idea outdoors with a popup shower screen from Wal-Mart. If there's no electricity, you might be able to find a container that will accept a garden hose and gravity feed it to the shower wand. I think a shower after a day of camping and fishing is priceless.