http://www.mcli.dist.maricopa.edu/webhound/hunt.html

Webhound's Scavenger Hunt : A collection of Internet scavenger hunts.

http://www.ctnba.org/ctn/k8/treasure.html

Internet Treasure Hunts for Students

http://www.innernet.net/bafile/page3.html

Internet scavenger hunts Especially for Kids.