If all the lights go out the darkness in your home does not have to be daunting. Of course the simplest type of emergency lighting is a candle. Just be sure that wherever you keep candles, the match sticks and propane and lighter is nearby.
You can also make your own emergency candies out of cooking oil. Take a piece of string and allow the one end to rest in the oil and the other end to hang over the dry end. The more strings you have in the oil the more light you will have. This is not the safest type of emergency light but it is a way of making one if you run out of candles or have nothing else available.
To double the light emitted by the candles you can place a mirror opposite the lit candle. In fact you can do this with any energy source including a flashlight.
If you have a fireplace it can be the ideal source of light. One newspaper log can burn for one hour and produce the same amount of heat as a wood log. Both wood and newspaper logs can be had quite cheaply.
Many people can use their solar powered garden lights as emergency lighting as well. They do a good job of lighting a small area and the good news is that they need only about eight hours of light outdoors to charge up again.
A tried and true option is the standard oil lamp. Buy the ones that use lamp oil as opposed to kerosene as they will burn cleaner and emit less smoke and oil small. You can also buy liquid fuel oil lamps that burn from sixty to one hundred hours. However these do not emit much more light than a little dinner candle.
Light sticks are also a standard emergency lighting item to have on hand. Originally they were used to decorate outdoor nighttime events. Now they can be used to as a low lighting option in an emergency. The light is often a bit green and quite low but they burn for about eight to twelve hours.
An emergency flashlight is always a necessity. Get a big one that holds two batteries. Usually two AAA batteries will run a flashlight continuously for about six hours. You can also buy shake flashlights which operate when you shake them, squeeze flashlights and flashlights that can be activated with solar power or through your car with a USB cell phone charger.