Examples of Low Budget Winners in Advertisement

In 2018 John Lewis (UK home store) spent £5.5M (~$7M) on their Christmas Ad featuring Elton John:

https://www.youtube.com/watch?reload=9&v=mNbSgMEZ_Tw

Here is another one that has same emotional effect with production costs of £40 (~$50):

https://www.youtube.com/watch?v=JHX0btJYcyI

Any other obvious examples out there?