Youth Services Idea Exchange (State Library of Ohio)
http://winslo.state.oh.us/services/yoidea/wgindex.html/
Created "to help librarians find easy, inexpensive program ideas covering a wide range of topics, activities, and ages" [from About Youth Services Idea Exchange]. You can search the idea database by audience, topic, or cost. Although it looks like you can do a combined search, you can't. Only search one category at a time. You can also submit program ideas for others to use.

Booktalks -- Quick and Simple
http://nancykeane.com/booktalks/
Database of book talks maintained by Nancy Keane, author of several books on children's literature and booktalking. Book talks can be searched by author, title, subject, or interest level. The site includes booktalking tips from LM_NET participants.

The BookTalker -- Joni Richards Bodart
http://thebooktalker.com/index.htm
Most of the information is about Joni Richards Bodart's books and workshops. The site does include a small archive (25 titles) of Joni's book talks, as well as her Top Ten Book talks.

GEM -- Gateway to 21st Century Skills
http://64.119.44.148/
Another potential source of ideas for library programs. I would start by searching the GEM catalog for "school libraries", then narrow the search by clicking on one of the terms on the right side of the screen, such as "Lesson plans."