Avatars in the classroom

I think avatars could be used as icebreakers for early lessons instead of the traditional introductions, particularly with teenage students who already know each other. Avatars can "borrow" some characteristics from the their creators but they allow students to display their creativity.
Another possibility could be to have an avatar contest. Students would have to vote for "the most original", "the creepiest", etc. Students may be asked to justify their vote, in that way they would have to make descriptions and comparisons.
It would also be interesting to ask students to create avatars for specific purposes, perhaps in connection with special dates such as national holidays, wearing typical costumes from different countries...the possibilities are endless! Which reminds me.....make sure you set a time limit!!!!