De Bono's Thinking Hats: a system designed by Edward de Bono which describes a tool for group discussion and individual thinking involving six colored hats. "Six Thinking Hats" and the associated idea parallel thinking provide a means for groups to plan thinking processes in a detailed and cohesive way, and in doing so to think together more effectively.
Addressing spirituality with children is different than addresing spirituality in adults, and it can start with mindfulness. I thought this article was great because it provides free, printable worksheets of activities to facilitate mindfulness with children. Parents could do this as well.