I always carry small sample or travel size of soaps and such with me when we go places, so many places have stuff with perfumes and other such scents and smells. I'll get a travel size bottle and refill it.
With little kids who are always making messes and getting dirty I have a small sink and 7 gallon water jug to wash up in. I had taken it out for winter and we had a record high temperature weekend and went to a local park and my almost three year old was stranding by the tailgate wanting the water and sink to clean off.