Sorry about the poor quality image, but this is where I have built the shower. I spread a tarp between the house and the wall, to give me some shelter from weather and to obscure the view from the street. Pallets keep me off the ground and allow water to drain away.

The shower itself is made from a 5 litre household fertiliser spray pump. I switched the nozzle with a shower head, which took no time at all! You fill it with warm water, pump the handle about 40 times and it gives enough pressure for a 5 minute shower! Not bad!

It might be a bit bracing outside though...