Pack the "Essentials" and be prepared for minor injuries, sudden weather changes or delays. Always carry: Map of the area and compass Extra food and water Extra clothing, including rain gear Sunglasses, sunscreen and hat Pocketknife Matches in a waterproof container and candle or other fire starter Whistle Flashlight with extra batteries and bulb Space blanket First aid kit And don't forget the most important thing of all common sense.