Many villages in the UK have turned red telephone boxes into mini libraries, just take a book and leave one behind. I really live in the wrong country. Just not as glamorous without the red telephone boxes!
Little Free Library! This idea is sweeping the nation apparently! You just build a little library on your curb and leave books in it! They can either just borrow it and return it later or swap it for one of theirs, depending on how you phrase your sign!