How about a 2 oz. small plastic contraption that can turn almost any 1 or 2 liter bottle into a camp shower? I’ll take it. That’s what the Simple Shower is, and it’s pretty awesome. The air tube that extends to the bottom of the bottle gives you a gurgle free flow that is smooth and sufficient, even if not the most powerful. If you need a little more flow, you can hook it up to a water bladder and give it a squeeze to add some power. Filling it up is also easy because you can unscrew just the cap to have a funnel. It’s just $10, so grab a couple and double fist it.