Downloadable Elementary Library Resources
(Jessica Munich forwarded these links)
Capstone has a number of useful handouts, bookmarks, and activities on their site:
Downloadable bookmarks on a range of topics
Students could be challenged to make their own.
Library Scavenger Hunt PDF worksheet -
You could even design your own -- ask kids to draw in activities they like to do, or illustrate their interests, and then find the Dewey Number on the shelf that corresponds.