We too have a "lending library" with various items for guests to utilize during their stay. There are brochures, local community (neighborhood) newspapers, magazines about the Twin Cities and state of MN, and books. Someone even left a book to add to the collection.
Additionally, there are activities for kids and adults including Clue, Trivial Pursuit, Trouble, Chutes & Ladders, Connect 4, Apples to Apples, Uno cards (English & Spanish), deck of cards, puzzles (pieces vary from 30 to 500), and coloring books w/crayons.
The Dollar Tree stores are an inexpensive source for some of these items, so replacement isn't costly when necessary.
I have put the loose pieces for the games in baggies and labeled them for ease in accounting for items. Still occasionally find puzzle pieces when cleaning, but guests evidently appreciate the availability as they have commented in the guest book.