How can i help out my community?

Im 12 years old and i really want to influence kids to help out the community. I need some fun safe ideas for children in grades 5 and below to help out in saving and isting out the community. And im doing this at school, like during my RTI or break/recess a friend and i were going to go around and try to get kids to help out. Thanks for all your ideas and suggestions, much appreciated~~