Printables 4 Kids
When my children were younger, I would print off a packet of games and puzzles tailored to their interests and pull it out when they were bored. They enjoyed working on word searches and mazes along with other puzzles and printables on long car trips or while we were waiting for appointments. Printables4Kids has a large selection of original printables for a variety of topics (answer sheets available for word searches, word scrambles, and similar printables).
A Solar System Coloring Book--Beginner
Accessed through Wayback Archives
A Solar System Coloring Book - Intermediate Level
Please feel free to print out and duplicate these pages for non-profit use.
Washington Apples Just for kids
From the Washington Apple Commission. Offers incite into a Kids View, coloring book, Recipes for kids, and apple trivia.
Animal coloring pages
From Enchanted Learning, over 60 animals featured under "A" alone.
Make a Farm Printable
If the younger children in your house are getting stir-crazy, try this printable Foldup from Own and Mouse Software. You download and install the software, then print the pages and let the kids cut, fold, and tape. You can also download Make a Town.