Iron out bends in booklets and books
Kinks can happen quickly and the booklets and books look equally unsightly. That gives points deduction in school.
If a kink or a dog's ear has spread in a book or notebook, I do the following:
I take a moistened blotting paper and place it on the affected area, which I had previously smoothed out carefully. Then I iron it with my iron at the lowest level dry again.
Schwupp the wupp, the book / book looks great again.