That goes to show that the images on the books should be simple to relate with and identify. In addition, stick to books that have easy coloring pages, which have well-spaced images for sample coloring and ensure you have enough crayon and coloring pencils to for all. You can have two kids on a book each taking a turn to color an image. It is a great way of teaching them the values of sharing.
If you haven't experienced Handy Manny yet then I can recommend you do so! First launched by Disney in 2006, this helpful handyman is a great role model for kids of all ages. As a parent I find it refreshing to have a positive character for my young boys to watch. Like all Disney programs for children there is no violence but what I enjoy the most is the fact Manny doesn't use computers. It is good to see a show that teaches the benefits of gaining real world skills and the rewards of having a trade.
With the availability of multiple images offered by today's technology you will never be at a loss for finding the image you want. If you can't find the exact image you are looking for you may be able to find somebody who would be willing to create one for you and a new creation will be born! Next time you are looking for a coloring page for your kids take a quick look at what is available right at your finger tips from your computer. With just an internet connection you will have limitless resources to entertain on those rainy days.