From InSpirit, the UUA Book and Gift Shop
Nurturing Children and Youth: A Developmental Guidebook by Tracey L. Hurd (Boston: Unitarian Universalist Association, 2005)
The Gift of Faith:Tending the Spiritual Lives of Children by Jeanne Harrison Nieuwejaar 2nd edition (Boston: Skinner House Books, 2002)
On the UUA website
Welcoming Children with Special Needs: A Guidebook for Faith Communities (PDF) by Sally Patton (Boston: Unitarian Universalist Association, 2004)
Tapestry of Faith Arts and Spirituality Resources
Tapestry of Faith offers two multi-chapter resources online. Spirituality and the Arts in Children's Programming is by Dr. Nita Penfold, creator of the Spirit Play program. Making Music Live, by Nick Page, provides guidance for incorporating music into religious education, including how to teach songs even if you are not a musician.