In the '09 cohort someone came across this open source resources page. It's a listing of free webtools (like Joyce Valenza's) that you may find useful for your classroom. They're organized by use/purpose and they're all free to use unlimited in your courses.
For this creative projects you have you may want to direct students to this site. It has a suite of free software that can enhance presentations and even pave the way toward digital storytelling (if that's where you're looking to go).
This is an awesome utility that stores your favorites/bookmarks on a server and is constantly syncing what's on the server to what's in your browser. But more importantly you have access to all of your bookmarks wherever you are, you just have to log in. And when you get a new computer or try out a new browser you can download them into your new browser. And you can create bookmark profiles to keep personal computer bookmarks separate from Tablet PC bookmarks, etc. Not so much Web 2.0 but it's a Godsend! And your students can snyc their existing bookmarks onto their new netbooks!