[aroon]

I think this would be so much better and useful if it was a solar powered shower that sat in your garden. It could catch rain water when available and use tap water (from the hose) otherwise. It's pretty simple to stick a water tank in a solar oven to heat the water too. And you don't need a water pump if the water tank is on the roof, you get plenty of water pressure from gravity.

The water could also then drain into the garden if you used the right soaps in the shower.

A nice design like this could really bring grey water to people who don't want to build their own outdoor showers.

[aroon]

BTW, I know this idea is kind of out of left field but its the first thing I thought when I saw the box. It really looks like it would be a pleasure to take a shower in it while being in the garden.