I love this activity for the end of the year or any time really. Have students draw their self portrait and do a gallery walk where the other students write positive character traits to define that student.
I personally love to do it as a last week activity in 3rd grade after we learn a lot about character traits throughout the year. Students enjoy reading their peers "kind thoughts". I usually even paste their school picture next to their portrait!
* Print on 11x14 paper for best results