Children are starving in Africa, people are homeless in cities around the world. Things can be done for these people, for animals, for the Earth.
"You must be compassionate, just as your Father is compassionate."(Luke 6:36) Taking action doesn't necessarily have to be something big. Just taking some time to visit a senior center or volunteer at a soup kitchen. You could amp it up by starting a food drive. In this group you can discuss ways to make a difference or organize something.