If you're the type of person who often loans out books to friends and family — a commendable public service, so thank you! — Knock Knock's Personal Library Kit is a clever little way to make your lendings feel like the real deal.

It comes with 20 self-adhesive pockets and "checkout" cards for recording loans and borrower info, a pencil for writing those things down, and an inkpad + date stamp to gently remind borrowers when your precious volumes are due for return.

Keep track of your personal book circulation system by getting this neat little kit for $18 on Amazon.