Painting on foil--add dish soap to paint to help it stick. This would be a new idea in my classroom. I would embellish the project by having my students take portions of the foil and engrave designs on them, or rub textures onto the surface. That would make something interesting. Perhaps there is a Christmas project in there somewhere.
Take a sticky roll lint remover, add some raised craft foam shapes and you have a great new way to stamp out some art! You can peel off the outer layers and make a different one - Endless possibilities!