The Littlest Singing Tree I've ever made: The Department of Peace Building Singing Tree (it's a branch) made over two retreats of the Northern California Peace Alliance. The retreat was with 11 people who have dedicated their lives to the creation of the U. S. Department of Peace Building.  We made the Singing Tree Branch of Peace, envisioning that the Department of Peace Building is in existence and adding to a culture of non-violent conflict resolution.