I love this type of site and I think that students will have fun with it too.

I played with Image Chef and I am on a baseball team!!
This "sketch" was made from one of my digital photos uploaded to Dumpr. There were a lot more image generators on Dumpr to explore; this one just happened to catch my eye.
I made a Wordle using the URL to this blog:

Glogster looked like it would be fun to play with, students could use this venue instead of a paper poster. I made a poster with some photos from my trip to London in 2008. It was fun but not a very intuitive site and I did not get the glog to save properly. I will try again at a later date. All of these Web 2.0 tools would allow students to express themselves while using new technology.