The Advent item I have out is the family devotional Creative Communications published last year. Perhaps for your parish or religious education program?
Years ago, I wrote, also for Creative Communications, a little booklet on St. Nicholas. I rather liked it, but unfortunately it's out
of print. You can grab the prayer I wrote for it here (remember it was a booklet for non-Catholics as well as
Catholics). You can also read the excerpt on St. Nicholas from The Loyola Kids' Book of Saints here - both are at the fabulous St. Nicholas Center which you might want to start exploring now, as opposed to the night of December 5, the way I usually do.
And Bambinelli! Sunday!
Many, many posts on it - are you a DRE or Catholic school teacher/administrator or pastor? Consider doing your own Bambinelli Sunday, like they will do in Rome on the 3rd Sunday of Advent...