Toilet Paper and related hygene
Normally I'd say not everyone needs to bring a full roll of toilet paper, but my last trip my roll got soaked and I was very happy someone else had some to share. Bring a roll, it's light. Waterless hand cleanser is important to have to prevent spread of your germs. Wet wipes are a wonderful thing to have along. They can be used for bathroom activities (more for the ladies than the men), but they are also nice for wiping the funk off your face at the end of a day of hiking.
