Instead of buying coloring books for your kids, you can find lots of coloring pictures available for free on-line. The Color (http://www.thecolor.com/) has thousands of pictures that you can print out for your kids to color. I find that my kids really prefer this to a standard coloring book since they can play around on the computer and pick out the specific pictures that they want. And we can get multiple copies too, so there's no fighting over who gets what picture. The pictures are categorized to making finding the ones you want easier.