After you complete the final you'll probably want a little down time. Here are some sites that allow for creativity to rule. Enjoy.
Imagination Cubed - Invite a friend to collaborate on a drawing.
Make a Pixton Comic about something.
Animate your cartoons with GoAnimate.
Playing with words at Wordle. Write a poem and Wordle it. Put your favorite words into a wordle. There's lots you can do.
Explore science simulations.
And then, for those interested in using their iPods to their fullest educational potential, there is 100 Ways to Use Your iPod in Education.