Being prepared doesn’t only apply to the Scouts, leaders help enable scouts by being prepared to when things go wrong.
When deciding what to keep in your pack you are always balancing weight against potential benefit. These items below have saved me numerous times. The rain suit is of particular use even though it does add significantly to the weight of the pack. In a pinch you can always leave the upper or lower layer at home depending on the circumstances.
The gorilla tape comes in a small compact roll, no need to cut a roll down with a utility knife. It is ideal for camping.