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.
(..) Yes. Yes, that is their name. This way. Don't follow the lights. Careful now! Or Hobbits go down to join the dead ones... ...and light little candles of their own. Frodo! - Gollum? - Don't follow the lights. - Gollum! (..)2002 The Lord of the Rings: The Two Towers