The sun sat high in the sky, warm but softened by the light breeze rolling off the forest. It was early afternoon, and the camp staff had just finished explaining the rules for the next group activity—The Tube Hunt.

A simple game, but competitive enough to stir excitement. Somewhere within a wide section of the woods, dozens of colored plastic tubes had been hidden, each one containing a folded strip of paper with a simple task or reflective question written inside. The team ...