I used 2 free sites (www.avachara.com/portrait and www.pickaface.net/create_avatar) to create various avatars for a Guess Who game to help my students practice physical characteristic vocabulary words. I intended this for my Spanish students but it could be used with any world language, ESL, or any other class.
This download comes with 5 different game boards (no character repeats more than twice!) and each game board includes 2 copies for a total of 10 sheets.
As you can see from the thumbnail image, I have laminated mine onto scrapbook paper and students can just use dry erase markers to write directly on the boards. The scrapbook paper started out as just a way to make them cute and then I realized it would help keep track of each set of boards.