Here is a great twist on the Paper Self-Portraits I do with my third graders (full instructions here). Instead of using realistic colors, I encourage the kids to mix it up. It's hard for some kids to chose pink or green for a face color but once they get going, there is no stopping the creativity that follows!
I put out a container of buttons, but don't give any specific instructions for their use. I love seeing what they come up with.
For more detailed photo tutorials, templates and student handouts, check out Deep Space Sparkle's "Fun with Portraits" PDF booklet. Click HERE for more details.