A search engine geared toward pre-selected kid’s sites, KidsClick! Web
Search was:

was created by a group of librarians at the Ramapo Catskill Library
System, as a logical step in addressing concerns about the role of
public libraries in guiding their young users to valuable and age
appropriate web sites.

Apple has a Student Gallery up that has examples of completed
projects using Apple’s iLife tools. The Garageband songs sound really,
really good. There are examples of music, photos, and movies.