What you use when light goes off?  

Do you mean during blackouts, when electricity doesn't work? Or what do you mean by "when the lights go off"? If you mean when the electricity quits working, such as because of a storm or something, I usually will just use a flashlight or just wait it out in the dark. My family has never really been big on candles - we find that they're more of a fire hazard than anything else.

I am using candles. Because in my area which i'm living right now is rarely go off in electricity. If i use gensets or inverter maybe i will not do it, because both are too expensive way to select, and because it will use not so often already.

When the lights go out, I use candles and flashlights. They provide enough light to get by until the lights come back on. However the electricity in our area rarely go out and when they do we are usually asleep and wake up to blinking electronics. :)

I dont'use any of them if I have no necessary work to do when the light goes off. Usually, the electricity will continue to work in few minutes.
If I have to work, I will go to net bar or KFC near my house. I can't work under the light of candles, and I have no gensets and inverter.

I still use candles. I have a couple of very nice candles with it´s chandeliers in important places of the house. There are matches nearby. I only use them so as not to fall. I usually use that break from modernity to get itnto my bed and begin to daydream.

It hardly ever happens here but if it was to happen I would use candles and a flashlight. I love candles and I have many around the house.

I use candles, because it is the cheapest,and famous when it comes to black out, and i use also a lamp that you will only put some gas on it.