Oz, do you have a compost heap? A very neat things I saw on a Doomsday Preppers, was to take a big metal pot with lid, and fill it with water. Dig a hole big enough for the pot down into the middle of the compost heap. Dig down to where the compost heap is hot, and steamy. Put the covered pot of water in the hole, and cover it back up. In a couple hours, dig it up. You will have hot water. The center of compost heaps get very hot. You can always heat the water over a campfire too.
When I did primitive camping, we would take a couple clorox jugs with the caps, punch a hole slightly smaller than the size of your pinkie finger, on the side at the bottom. Find a couple small sticks that will plug the holes, and shove it in the hole. Open the clorox jug, and pour the hot water in, and add a little cold water to get the temp right if needed, then tighten the lid. Hang the clorox jugs in a tree in a private area by the handles, with cord. Pull the stick out. You should not get much water flow. Unscrew the cap a little. Now you have water flowing nice. Get wet, put the stick back in, soap up including shampoo if desired. Pull the stick out again, and rinse. Now that you're done, screw the cap back on tight. Next person should be lined up, and ready to go. 1 person can usually shower with less than 1 jug of warm water, and get totally clean, and feel refreshed. When the first jug is empty, and the second still being used, refill the empty one, and go hang it back up. It's assembly line showering, but it's easy, fast, and water efficient to get a nice warm shower.
When I did primitive camping, we would take a couple clorox jugs with the caps, punch a hole slightly smaller than the size of your pinkie finger, on the side at the bottom. Find a couple small sticks that will plug the holes, and shove it in the hole. Open the clorox jug, and pour the hot water in, and add a little cold water to get the temp right if needed, then tighten the lid. Hang the clorox jugs in a tree in a private area by the handles, with cord. Pull the stick out. You should not get much water flow. Unscrew the cap a little. Now you have water flowing nice. Get wet, put the stick back in, soap up including shampoo if desired. Pull the stick out again, and rinse. Now that you're done, screw the cap back on tight. Next person should be lined up, and ready to go. 1 person can usually shower with less than 1 jug of warm water, and get totally clean, and feel refreshed. When the first jug is empty, and the second still being used, refill the empty one, and go hang it back up. It's assembly line showering, but it's easy, fast, and water efficient to get a nice warm shower.