I helped someone pay their bus fare to get home.
They were $2.00 short for the fare and it was a forty mile walk for them, so I covered the difference with the bus driver.
I didn't feel particularly special because of it. I would hope someone may do the same thing for me. The bus I use serves a large number of rural communities and it is constantly under threat of service cuts. Paying a little extra for someone else was no real hardship for me, not $2.00 anyway. My theory was that if the bus made more money it might save the service for another year. Helping one personon therefore was the perfect utilitarian solution.