A number of people have pointed me to this but most recently I found it again from Kimbooktu -- an amazing blog that ever librarian and bibliophile should attach oneself to with haste!
But I digress...isn't that fun!! You can make your own library cards! Having spent 8 months transcribing a collection of those little suckers into a formatted table ONE card at a time...I think it's fabulous. Check out the Card Generator and have a great time!