A few weeks ago, there were printable coupons out for $1.00 YoBaby, and at Walmart the 3-in-1 meals are $1.00-if you did this deal, those cups should have codes on them to get a Tag Jr. book.
You only need 4 codes, and I filled this out when I first bought the yogurt, and got the book on Saturday in the mail! It is a great book! And is compatible with the Tag Jr. reading system! If you don't have kids or your child is too old for this book, I would suggest doing it anyways and keeping it around for a present!