Thomas and his family went on a camping trip where Thomas learned the importance of not wasting resources. On the first night, Thomas played with his flashlight for too long and used up the batteries. He also ate an entire bag of marshmallows, which left none for the others. The next day, Thomas tried to catch a fish using five worms on one hook. He didn't catch anything. His father explained the saying "waste not, want not" meaning being careful not to use more than needed. Thomas realized he needs to be more careful about wasting things if he wants to be trusted with bigger responsibilities.