This collection of Intermediate level (grades 5-11) resources has been gathered to assist schools in developing purposeful anti-bully, including cyberbullying, campaigns. Many of these resources can be used as stand alone classroom activities or assembly topics.
Besides teaching kids about computers, you should teach how to be responsible with disposing of computer equipment. Staples seems to have a very good program for this!
An interesting article discussing how much of an environmental impact Google searches have.