A Quiet Book, often called a busy book, activity book, quiet time book or cloth book is a couple of fabric pages, filled up with entertaining kid's activities. Busy books tend to be used to help keep kids ‘quiet' on a journey, doctor's office or at home in regards to quiet play.
Quiet books work very well in building children’s sitting tolerance and increasing their attention span.
https://wowandnow.com/blogs/quietbooks/the-reasons-your-child-deserves-a-quiet-book
