This was a lot of fun for the kids to make. We cut out white hearts and placed them inside a shirt box and then dropped splotches of paint all over the heart. We then used cars to paint the heart, by running the cars through the paint. We sprinkled ours with an iridescent glitter and they looked so cool! The more tread the tires have the cooler the paint job. This is also fun to do with marbles and let them roll around in the box.