I have done a unit on prehistoric art. Mostly we just looked at it, and talked about the people who did it and the things they wanted to show in their art. We did do some little projects where we used what would be similar techniques – painting with simple paints on a rough, wall like surfance, impressions of hands, and so on.
Years ago, when I took art classes, we did some nice pottery vases in a greek style – we had pre-made greenware, and looked at all kkinds of Greek vases, and produced something similar ourselves. That was quite a fun project as well.