Oh man, we have a bunch of those around town. I should absolutely do something like that.
Discussion
I also have a bunch of extra copies of "economics in one lesson" from the Mises Institute that I got a while back. I could start peppering those around as well.
Coincidentally dropped two copies of that off in one down the street from me over the summer. Plus Anatomy of the State and the Anarch-Capitalist Manifesto.