One of my favorite books to celebrate the liturgical year is a great book called the Big Book of Catholic Traditions. I think I've linked it in a previous post here. It is full of great ideas. And for recipes--A Continual Feast by Evelyn Birge Vitz is great! Also, author Cay Gibson has a couple of great books (but a recent addition specific to Advent) that can be found here.
Do you have any Advent resources that are your tried and true favorites?