Whats a great middle-high school art project?

Question:

Whats a great middle-high school art project?

students: 6-8
time: 30 min
supplys:minamal
experience: fair
IT MUST BE FUN!!
it can be something you have done in sunday school, camp, art class, or something you have done at home

Best Answer - Chosen by Asker:

Take three colors of clay. Roll them out flat then stack on top of each other. Then roll them up like a pumpkin roll. Slice them into thin rounds and press onto a bottle. Once you cover the bottle bake it in the oven on 270 degrees.

It looks really neat and is really easy.