Thank you for helping us by reporting bad content.
Have you ever doubted what to do with that old book you don`t read any more, or that telephone list that you don`t use, but still you insist on not throwing them away?
Well, this may be a solution to your problem. It`s pretty simple, just make a hole with the size you need, place a grid at the bottom of this hole and put something inside it that prevents water from wetting the book (something made of plastic) and it`s ready!!
Isn`t this a good idea?
(picture from the source link below)