We painted them blue and put a picture on the front and a heavy duty magnet on the back. Now each child's artwork can be held up with their own magnet.
I also made an "I Can..." board. I made a large Pete the Cat face to put up over the board. On the board itself are speech bubble cutouts that list various skills - I can count to 10, I can write my name, etc. As each child accomplishes a skill, their picture will be added to the board.