I have just released a simple web app at: http://clrng.com. It is exactly what you would expect – a web based coloring book. Feel free to download and print the images for your personal use.
PS. Given all the domains in the internet seems to be booked now I decided to start a “no vowels” movement rather than trying to get a coloringbookforkidsavailableforfree.com or coloringbook1231993.com one 🙂
hope you will like it. I will add more images there from time to time.