Please add links to any interesting A/A blogs you come across....
I will put down the ones from Raising Freethinkers. If you have not already I recommend picking up this book. It is full of so many ideas and programs for children of non-religious parents.
The Friendly Atheist
Rant & Reason
Half Full Blog "The Science of Raising Happy Kids"
The Meming of Life Parenting Beyond Belief blog