Once Upon a Time "Your family bookstore"

My girls and I will be making cookies for the upcoming author event with Maggie Stiefvater - the author of bestselling "Shiver" and "Linger".  We will see if we can dream up some interesting recipies for our wolf-themed cookies.  Maggie loves cookie dough -- and we'd love to give her some of our interesting flavored ones, but perhaps that isn't the right kind of swag to give an author?