I wonder if any libraries actually threw away their old card catalogues? If so, I wonder if they regret. Mine has been repurposed as drawers for everything from markers to elastic bands and the cards have long since been used us in the library and by classrooms for a multitude of uses.
Here are some of the more creative re-uses I’ve found on the ‘Net.
Find out how to wire it up for eReader storage like Bloomington Junior High School Media Center