I found these little letter packets online. The first book: AT is FREE! (Click here to download a copy of your own.) Of course, they "get you" in that, if you like the packets, subsequent packets cost $1.50 each, but I definitely think I am going to buy them. They are great. All kinds of workback activities with this letter combo. So easy to print out and so easy for the kids to work through. Sticking with my "no preparation and no planning" year of preschool for the boys.