Steal this postal idea
I was thinking about how much fun it was to get mail as a kid. These days, it is all bills and Kafkaesque forms from the government, which gave me an idea.
What if there was some sort of inexpensive subscription service where you got a nice or fun letter in the snail-mail post each month? Maybe customised for you in some way. Perhaps also some postcards from random parts of the world.
Perhaps when you sign up for a year of nice mail, you could opt in to a postcard exchange. Opted-in people would get their postal address added to a handful of nice letters with a prompt to maybe send them a postcard. Thus, subscribers would get nice things by post from the service and also from other people who like sending cool local postcards.
For added niceness, opt-ed in people could get a birthday mention. Or put on the postcard part of all the letters.
Something like that anyway. There would have to be an opt-in component because I’d not be happy sharing my address otherwise.