Voice Thread

This is a very interesting technological tool.  I like that we can post a "math problem" (for example) and the student can "doodle" to demonstrate how they came up with an answer.  I'm trying to think how this would be useful in Social Studies.  My class is beginning a topic of The U.S. Constitution, famous people in history, etc.  I have broken my lesson down into Benjamin Franklin and his contributions to our country.  It's amazing the information I was able to acquire.  I'm considering doing a voice thread where the students can illustrate a picture of their favorite hero of the time and using the voice recording, read a little "introduction" to the character.  I'm not sure how I would go about doing it, but since I don't have to teach this lesson until March first I'm going to try it.  If anyone has any ideas that could be helpful, I'm open to suggestion!