Since we're discussing mods, I thought I'd mention my nifty little solution to pressurized water. I didn't want to deal with a 12v pump so I was looking for a modular, flexible air pressure-based system. After much contemplation, consideration, head scratching, and obsessive researching, I ordered a bunch of those LCI water cans (MWC) and an extra cap with a budding concept in my brain. I fitted the extra cap with a pressure gauge, and quick connect air fitting that hooks up to the coiled air hose I use for tire inflation (which is connected to a 3 gal air tank under the chassis.) Next to that on the extra MWC cap I fitted a pickup hose for in the can and a standard water hose male end for outside which is connected to one of those coiled 25' garden hoses with a sprayer attachment.
Now I turn the dial at the pressure gauge on the cap and let a little air into the MWC. (8PSI) is the highest I've dared. Makes for plenty of pressure to shower, wash dishes, hose off the windshield, etc.
Hot water comes from either heating on the stove and pouring into the MWC or from a few hours in the sun. When one can is empty, I just take the modified extra cap and switch it onto another can. I like the simplicity and portability, but like all my projects, it seems to be in a perpetual prototype phase.