Make a design out of painter's tape, put on painting surface. Paint over it. Then pull off the tape and see what design is left. Marble painting: take the lid of a box. Turn lid upside down so it makes a tray. Put paper down inside the box lid. Squirt some paint on the paper. Toss 4-5 marbles in the paint and let your little one roll those marbles around in the box across the paper. He/she can hold the sides of the box and rock it back and forth, making the marbles roll across the paper.