What to do with foreign currency ?

“What should I do with the coins left over from a holiday?” Here is a question that always had the same answer for me: buy something with what’s left before crossing the border and keep whatever remains as a memento.
But this video by Follow the Foot offers an alternative solution for these few pieces of copper and silver that could change someone’s life.

Follow the Foot is a series of videos made by Ian Bennett during his travels in Asia. There are a few gems within.
For example, I love this one:

It makes us nostalgic? Or it is just me?