This is what I include as a bonus with my tips at restaurants.

The majority of the world has never been exposed to ideas of sound money, we must give them the information they are lacking.

But in the current world the only reason someone would try to communicate with a stranger is to scam them, or to at least extract value from them, meaning everyone is distrusting and rightfully so. Instead we most instead give value to their attention.

So I am doing the opposite of most people in today's world, I give people a card of information with real silver dimes from American history attached to them.