Does your town have "little free libraries"?

We have a bunch of these little free libraries around town. It’s an honor system book swap that seems to work pretty well. My wife is currently reading a book from one of these. She has donated books as well.

I love the idea, and would like to think that the model would be great to apply to other things besides books. They could be small sheds that provide public tools or goods.

Have you used these before or have you been involved in buying and installing one?