Activities and Crafts

ChildFun Family Website : Coloring pages, crafts, activities, information and articles for parents. 
DLTK's Printable Crafts for Kids : Holiday crafts, greeting cards, coloring pages and more. 
Family Fun : Crafts and activities, party ideas, printables and more. 
Hippo Works : Fun comics and activities. 
Making Friends : Paper dolls, beading, costumes, recipes and more.
Sesame Workshop Parent's Activity Planner : Get ideas and instructions for a variety of crafts and games.

Arts and Music

Art Safari : Explore famous paintings, make your own art and more.
Chicago Children's Museum : Exhibits, online interactive games.
Instrument Encyclopedia : Information on more than 140 instruments, with pictures and sound!
Jazz Kids : History of jazz, interactive music games.
PlayMusic : Information about orchestras and instruments, interactive games.

Careers

BLS Career Information : Find out what it's like to be a librarian or a policeman, or anything else you can think of!
Girl Power! Science and Technology Jobs : Information on jobs in the science and technology field for girls.

Games

Alfy : Free online games for kids.
Cartoon Network: Games and info on shows.
Discovery Kids : Fun and games, info on Discovery Kids television shows.
Disney Online: Games, interactive media, info on Disney shows and movies.
Fun Brain : Online educational games for kids.
Lego: Play with Legos...online!
Neopets: Create your own pets online, play and have fun!

Health

Food Museum : Information on food, online exhibits.
GirlsHealth : Information on girls' health issues.
KidFit : Information on different exercises, health and games.
KidsHealth : Health-related information, activities and games.

Jokes & Riddles

1st International Collection of Tongue Twisters: Tongue twisters in 108 languages, reader submissions accepted.
Aha! Jokes for Kids: Silly jokes to tickle your funny bone.
Knock-Knock Jokes.com: Hundreds of Knock-Knock jokes.
Squigly's Jokes and Riddles: Jokes, riddles and more!

Reading Resources

America Writes for Kids : Information on popular authors, reading suggestions.
BookHive : Book reviews and information.
World of Reading : Sponsored by the Ann Arbor District Library, a site of book reviews for kids, written by kids.

Web Searching

Ask for Kids : Kid-friendly web search engine
KidsClick : Web search for kids created by librarians.
Surfing the Net with Kids : Web directory for kids, teens, and parents as well.
Yahoo Kids : Kid-friendly web search engine, games, music and more.