First, fellas, get your mind out of the gutter.
One of the things I've kept since my first SMB is the handy soft-wall water hose that came with it. Sorry whoever I sold the van to.
It's amazing. But it's 20 years old now and leaks at the ends.
Amazon has an improved version that is a great deal right now:
It looks only slightly bulkier than the one I have which will fit in a small ziploc bag but this is still a huge improvement over storing a regular water hose in a van.
Say you don't need a water hose with your van? Me neither but that said I've used it multiple times, usually to top off my water in some quiet campground.
Also, the word is out on these little guys but they make it even better if you were unaware: