On the Buzzle website, read an article by management guru Peter Drucker on Qualities of Leadership in Children. The article encourages adults to motivate children to develop leadership qualities.
The website Teach with Movies offers lessons based on many movies and TV shows. Lesson plans for eight-year-olds include the movies Babe and A Bug's Life, both of which feature characters growing into leadership. If you purchase a membership, you can have film-based lesson plans available on short notice.
Growing Field Books publishes books to recognize and build leadership skills in children.
The Tapestry of Faith program Harvest the Power provides a faith-based journey for adults into congregational leadership skill development.