I just finished "ordering" all our library books online for the next 4 school weeks. Now to keep them all straight as they start coming into the library.

And please, please, please, dear Toddler Child, PLEASE stop shoving them under the couch and throwing them off the deck!
How do families with small children utilize the library without paying through the nose!? We never had this problem before having 3 kids; I'm telling you, #3 is a doozey!
Sad as it may sound, but we tend to buy books, because it often works out cheaper than checking them out. We can get books pretty cheap through the school's Scholastic program. Then we just donate them to the school after our kids outgrow them. The Scholastic program helps the teachers get books for the classroom and the school appreciates it when the books get donated to the school library. We do like to go to the library, but we rarely actually check the books out.
Here's a crazy example of what it can cost to take my kid to the library... my #1 child has a photographic memory, esp. when it comes to numbers. His school teacher walked the kids down to the city library as part of a class project. The rule was, if kids had their cards, the teacher let them check out books. My son did not have his card, but the teacher didn't know he didn't have it. DS checked out a bunch of books, keying in his library card number from memory, even though he had not even seen his card in months as I had quit going due to a previous costly incident. I never knew he checked any books out until a bill went to collection for $45. I immediately went down and suspended young DS's ability to check books out on his card. And that was just one library mishap! :/ We have spent hundreds of dollars at the library because of book issues with our children.