Even if you are not a huge fan of actually camping, it is a good idea to keep a camping lantern in your house. If you are considering buying an emergency kit for your house, including a camping lantern on your shopping list is a really good idea.
While candles can keep you out of the dark during rolling black out season, camping lanterns provide a lot more light and are generally safer. I personally think that the LED versions give off the best light, but it is all down to personal preference.
You can buy a camping lantern on sale quite cheaply online and sometimes in store, depending on the time of month.