The car is so old that replacing the engine is 'not worth the candle'. [=the effort isn't worth the cost]
The new movie doesn't 'hold a candle to' [=it is not as good as] the original version.
We came to the memorial to 'burn' [='light'] a candle for the victims of the accident.
(..) Oh, I don't need-- You still have friends in the North. If you're ever in trouble, light a candle in the highest window of the broken tower. - But who-- - You're not alone. I like your dress. Who made it for you? (..)2015 TvShow: Game of Thrones Title: Kill the Boy Season: 5 Episode 5