Earth Day is April 22. To find suggestions for book displays try the following: NoveList available throught the NVDPL. Library Booklists This page links to different libraries offering eco book lists for eco-fiction, green fiction and environmental fiction. If you have some suggestions please add them to the wiki. See the Earth Day Canada site for events, links and resources. TeachersFirst has activities for classrooms.
While I was in the NVDPL site I noticed that they have two new EbscoHost research databases: Student Research Center and Literary Reference Center.
The Learning Activities site has an extensive list of education appropriate gadgets/widgets that can be added to web pages or blogs.