The concept is similar to the Peace Table. Some Peace Tables use a rock, others use a baton, or something else. This type of conflict resolution is common in Montessori method schools. A stone with the word Peace written on it is common.
It is said that education is the best weapon for peace on earth. We teach children to problem solve, practice peaceful conflict resolution, and to express themselves appropriately. We instill respect for mankind and our mother earth. Every classroom is set up with a peace table where children are welcomed to explore alone or to discuss a particular incident with a classmate. http://www.aycma.com/extra_curricular.asp
Song for teaching use of the Peace Table for conflict resolution.