Mini has too many books scattered around, her own books, books from school, and those borrowed from the library. It was difficult keeping track of them, especially if they were to be returned. So, I made rules to keep different sets of books in different places. We have three different small bookshelves for each set.
I do have a massive hoard of fabric scraps. What best way but to use them to make a book bag. I designed a deep bag to allow the big books. I added two handles like a backpack so that it can be hung on the dining chair.