Here is a great idea from Miller Library, at McPherson College, on how to promote your library. It is the Zombie Guide to the Library webcomic. I’m not sure this is available in print form, but it is available on their website at the following link to “Library of the Living Dead – Online Edition” to download the file. Any library could replicate this in some form or other and really have fun with it.
http://blogs.mcpherson.edu/library/zombie-guide-to-the-library/