I usually don't carry more than a basic tool set and flat repair stuff. My wife had a mild fall and scraped her knee, I stopped at a convenience store and bought band-aids and some Tylenol. Another in our group got bit several times by a horse fly on the face and crashed. More band-aids and tylenol. I felt like a hero.

I ride with the same people next week. I am not even bringing a tube.. Let them worry about it.. LOL.