I have a ceiling light in my kitchen. It is made to take two bulbs and be covered by one of those glass bows that hang down and are held in by a nut. Only one bulb ever worked. that was ok. One day the glass thing had it's nut give way and it fell and broke. We carried on. I mean who looks directly at a ceiling light anyway. It made more light without the cover-- and since it was down a bulb anyway that was an advantage.
Finally, this week, after 7 years of daily use the remaining light gave out. I figured it was the bulb-- but sometimes it flickered back on for a while, randomly. So, not the bulb. Some sort of short.
I discovered that by prodding the light-bulb with a broomstick you could make it light up. But it went out after a while. So I moved from gently prodding to gently whacking. Short term fix. Now even striking the light with a good thwack does no good. Probably what happened is that this light, like the one in the bathroom, got corrupted by the leak from upstairs. (That seems to have subsided now, after years of intermittent leaking.)
Have moved desk lamp and standing lamp into the kitchen. Kitchen is tiny. This is both bad and good. Light goes further, but standing room greatly reduced.
I already have my flashlight in the kitchen for looking into the pantry. I may have to just wear a headlamp for cooking!