My friend, Justin Taylor, recently recommended some great children's books by Paul Maier. Maier has written both an Old Testament trilogy and New Testament trilogy for kids. I hope I can get them sometime in the near future. Here's what Justin loves about these books:
(1) They are biblically careful and faithful (2) They are beautifully and accurately illustrated (3) Adults will learn as much as the kids
BTW ... here's last year's list of my Recommended Christmas Books for Children.