My DD will always head for paper or card to chew, regardless of what else is in front of her - if there's a plastic teething ring on her lap and a book somewhere else, she'll move towards the book and chomp on it.
It's getting very wearing pulling bits of paper and card out of her hands and trying (unsuccessfully) to get her to chomp on plastic. She'll happily turn the pages of a book, then pick it up and chomp on the cover when she's done.
Is this any way normal? I've seen cats do this but not babies before! 