I stumbled upon a charity called We Give Books today. Through their website, you select a charity to sponsor, and then you get to read free books online to and with your child. With every book you read, a book is donated to the charity you chose. The best part? It's completely free to you.
There are a mix of different books for all children from infants to age 10. If you have children, or just enjoy reading children's books, check out the site for yourself. You can visit We Give Books here and support the literary charity of your choice.