We participated in this week's Unplugged Project again. The theme this week is BALLS and we decided to do something involving paint. We have not painted in quite a while. One thing about our projects is that we almost never buy something for them but choose to work within the items we already have. (This explains why all our painting projects are blue and yellow for example!)
Anyway, I chose to do the project where you line the bottom of a box with construction paper, dip a ball in paint, and have the child tilt the box back and forth, which makes the ball paint a pattern on the construction paper. My kids both participated this week (ages 3 and 6) and they both enjoyed it. In fact, they each made two pictures. I think they would have done more if we would have had the time.
The instructions I found on the internet said to use a golf ball but we don't have any of those so we just used a bouncy ball. The tempera paint washed right off when we were done. If the ball is too light, I don't think it will work as well, so I would use the heaviest one you have.