I also remembered two sites that are great for audio books:
Storyjumper is another neat site that let's you create and publish your own children's book. Lulu also lets you publish as well.
After watching the #140CONF, I had so many ideas...The first one is using Spaaze. It is similar to Wallwisher but different. You can move the screen around and attach actual files instead of just web links. One downside is that you have to sign up to use it, but teachers can get around that.
Today, I received an amazing idea from @kevinhoneycutt. He uses Plurk. While I am still learning how to use Plurk, I can tell you that I am already a huge fan.
Two new tools you can utilize for brainstorming are Mind42 and Chogger. I came across this very informative map of Web 2.0 tools today on Mind42.
Have fun exploring these sites!