When my kids were little, I would do Charm Tack quilting. You took a cookie cutter or some kind of item, drew around it to make the shape, either on the quilt or on a piece of paper or cardboard from cereal box, etc. Place the shape on the quilt (if not drawn on quilt) and quilt around it, then place it on another place on the quilt, quilt around the shape, til done. If you do different shapes they also have an "I spy" type quilt, where they can search for the shape of the dog, or star, or ball. Or you could scatter the continuous freehand star that we all learned to do in grade school.