Give each person a piece of paper and have them draw a self-portrait. Ask them to put their name on it (in case it's not obvious who it is!). You can spend a little or a long time on this first half of the activity.
When everyone is finished, stick them all up on a wall.
The second step of this exercise involves handing out some stars. Each person should write a positive adjective describing each person and stick it on their self-portrait.
You can buy star shaped Post-it Notes for this which work well, otherwise make your own.
This is a similar game to the Encouragement Game