The Little Book of Hindu Deities
Sanjay Patel, an animator and storyboard artist at Pixar animation has designed this wonder book on Hindu Deities. He has given a total new approach towards looking at Hindu gods and goddesses. The book brings new life into old mythology, by telling the stories of various deities at same time drawing us in-literally-with joyous and unexpected full-color illustrations.
I am sure this book can certainly help educating your child on Hinduism without taking many efforts.
The book is also available on Amazon. Also, check out some Sample pages and Sketches from same book.
This shows that, Given a better presentation & style Hindu mythology can be cool and interesting.