The variety of them that are offered ensures that children of various ages can find something that they would be content with. In fact, you may feel good about composing a list of great sites where various online printable coloring pages can be found. The other option is just to type specifically what you are looking for into a search engine and it will bring up relevant pages to get it.
However, it isn't just at home that they come in handy. Many professional offices take care of children. There are also parents that have to bring their children along with them for business. It may not be ideal but they often can't afford child care or it is hard to find someone to watch the youngsters so they can take care of things.