I'm always looking for ways to tie the online space of the library website with the on-the-ground stuff that happens in the physical library, so I loved this idea from the Johnson County Library in Kansas.
They have an annual Bookmark Design Contest for kids. Participants put their imaginations to work to draw and color on bookmark-sized paper. Then the bookmarks are scanned and turned into digital images so they can be posted to the website:
http://www.jocolibrary.org/index.asp?DisplayPageID=1881
The ten winners get their photo there too.
The kids get to tell their parents, grandparents, aunts-uncles-cousins-etc., about the bookmark each of them created. Everyone can visit the 'virtual branch' (the library website), no matter where they are geographically, thus tying it all together with pride and enthusiasm. Even if you don't know these kids personally, it's fun to see the great variety of expression and creativity from all ages.
If your library doesn't have anyone on staff who knows how to scan images, I'll just bet there's someone in the community who would love to volunteer on a cool project like this. In my opinion, the world will never have too many bookmarks!