Weddingbee boards

Our reception will not be heavily themed, but we are having a library/book element.  We each picked out ten books that matter to us.  Our table numbers will really be the book covers for each of the books.  Our escort cards will be library cards.  The card will identify the book for the table and the guests will be listed as people who checked out the books (I even got a stamp so I can stamp the due date as our wedding date).  We even have a card catalog that will hold the cards (alphabetized by guests' last names, although I'll have two attendants there to help people find their cards just to speed things up). 

We'd like to find something that looks like a book drop that we can use for our card box. Have any of you seen anything like that or know where I can find it? My fiance or my dad might be able to make one for me, but I'd at least need to find them a template or something.

Any suggestions are appreciated!!