This is a very simple project I did for my boys' birthday party. It was useful and I had to assuage my plastic guilt for buying the Betty Crocker frosting. Here's how I did it (as if directions are required):
All I did was wash the frosting containers
Cut a strip of card stock to fit around the container and tape it in place
Add the crayons
At the party, I used Kraft paper as the tablecloths (like you'd find at a crab shack) and put the crayon containers in the center so the kids could just color on the tablecloth. Now I am enjoying having these on-the-go crayon containers for the car, church, or visiting a friend.