If your interested in doing work that helps children while not working with them directly, generating content geared toward kids is a great option. One of my ongoing jobs has been writing children's stories for an online application. There are many types of stories, but the work I am assigned often has a moral to it that should help children learn lessons that are applicable to the real world. They also focus on creating diverse content that teaches about other cultures and religions. It has been very rewarding. I'm sure there are other types of content, such as that for games or video content, that would also be aimed at a younger audience.
I also highly recommend tutoring. Though similar to teaching, working one on one with students is a lot different than being in the classroom, and some kids need that personal attention, especially on topics with which they are struggling.