Printed books have many uses besides the obvious. Books have been used as elements for art projects, components in construction and for many other things. A popular hobby, especially among librarians, has been creating long, domino-like chains of books and then toppling them. The objective is to create a domino chain with as many books as possible, and topple every book in the chain after the first book has been pushed over.
At Frankfurt Book Fair 2015, German team Sinners Domino Entertainment managed to make a new Guinness World Record by toppling 10 200 books. As it happens, the books were (big and heavy) copies of the Guinness World Records 2016.
Check out the video where the whole book domino chain falls down one by one.