My kids grew up in a fairly ethnically diverse neighborhood, enough so that many religions were represented in their schools. For those interested in exposing their children to various religions and beliefs some of these may be of interest...
* Yaffa and Fatima: Shalom, Salaam by Fawzia Gilani-Williams
* A Moon for Moe and Mo by Jane Breskin Zalben
* The Golden Rule by Ilene Cooper
* Whoever You Are by Mem Fox
* Daddy Christmas and Hanukkah Mama by Selina Alko
* Everyone Prays: Celebrating Faith Around the World by Alexis York Lumbard
* The Kids Book of World Religions by Jennifer Glossop
* One World, Many Religions: The Ways We Worship by Mary Pope Osborne
* Who Believes What? Exploring the World's Major Religions by Anna Wills
* See Inside World Religions by Alex Frith
And for chapter book age....
* "One World, Many Religions" by Mary Pope Osborne
* "The Kids Book of World Religions" by Jennifer Glossop
* "What Do You Believe?" by DK Publishing.
In this world I have seen learning about other religions, other ethnicities, traveling, attending the services in other temples hugely valuable in my own development and would like to think that exposure may help us get closer to world peace someday.