Creativity can be nurtured over time with exercises. A new exercise that I have incorporated into my art classes is called "Challenge Envelopes." I fill white, letter size envelopes with materials I have in the art studio. Recently, I used feathers, foam shapes, tissue paper, colored paper cut into chips, and scraps of paper left over from other projects. Then I put the envelopes into a bag. When the envelopes are all together they look so similar that it's hard for the children to figure out their contents. I also give each child a piece of card stock and Elmer's Glue. The children really like the art challenge. Quickly a variety of art begins to emerge from the materials in each child's envelope. One child rolled the card stock into a tube and decorated it with pieces of tissue paper. Two children broke the plane of the paper by having the paper come off the card stock. It was exciting to see how the children used the materials. The mystery envelops are a great way to engage children and challenge them creatively.