A Water Shower? In Here?

I just read a blog page where a lady converted her van into a camper van and hung cloth shower curtains on a round ring over head to enclose a plastic cement mixer tub, much like this one below and sat on a stool to shower.  She used a quick 1.5 gallon gravity shower and she said the tub was light enough for her to pick up and carry and dump.

I came across this shower idea too! It's a Nemo Helio Pressure Shower.

Of course, if you elect to shower outside, something like this could be handy too.  An outside shower tent!

Just ideas to keep me at it!