Adopt a highway

Take responsibility for the trash around you. When you see a piece of litter, pick it up. Leave your campsite cleaner than when you found it.

Yeah, it's gross to touch other people's garbage, but your hands are easy to wash.

If you are up to it, you or a group can even take part in the adopt-a-highway program in your state. It's pretty easy to find. Just type in "adopt a highway [state]" in the search engine of choice, substituting your state's two-letter abbreviation for [state]. It should bring up the program on your state's site.

And then, you get to see your name up on one of those signs on the side of the road.