What you need:
Paint
Newspapers
Large Pieces of Paper
Items that roll - this can be a variety of balls, trucks or anything you can come up with in your imagination. Don't use anything too valuable just in case the paint does not come off.
Set the ball (or other item) in paint and roll it to your child. Instruct your toddler to roll it back to you. Be careful they may decide to bounce the ball. You can use different colors of paint for different objects so they can see how the different objects made different patterns.