To add to the booklist, I think Ellen Jackson also has an autumn equinox book that's pretty good.
In regards to raising children to think for themselves, my family and I are Unitarian Universalist and here's how some of us describe our understanding of the divine:
We have an atheist, a pantheist, an agnostic, a possible deist, a monotheist with Wiccan/Pagan practices. . .the bad thing is that we all tiptoe around the atheist in regards to anything spiritual in order to maintain family harmony. . .