If the power goes out, you'll need to see at night. That's why flashlights and camp lights are essential. Some companies even make a combination electricity/light/radio that seems to be handy when the electricity is out. These portable units are equipped with a weather radio, detachable flashlight and a charging port that can power small electronics, such as portable cell phones. These devices come with a 12-volt rechargeable battery [source: Amazon]. Candles and dry matches are also essential, just be careful using them.