You can find many clip arts with slightest modifications yet with different subject matters either, thus there is a continuing process of preparing, producing and using of these school clip arts by a lot of people. With everything else changing so fast, I believe it is valuable to retain some things essentially as they have "always" been. If your little one is fascinated by Disney characters such as Donald Duck, Mickey Mouse or Tinker Bell, you can selectively choose to print coloring-pages on this particular theme. Cartoon characters tend to constantly fall in and out of fashion. If the current trend is that of Ben 10 or the Incredible, you can easily generate hundreds of printable coloring sheet based only on these cartoon characters. The minuscule effort it takes to compile an on demand coloring book is worth the smile on your child's lips.
Today most homes have a printer on hand and that makes it fast and easy to use online printable coloring pages. They don't take much ink either so you can find the value is there all the way around. If you don't have a printer at home you can often use those at the local library to print the coloring pages for a very small fee.