Step 1: Cut out hearts from a solid color of construction paper, cardstock, etc.
Step 2: Let your child draw pictures of things they love on those hearts.
Step 3: Dictate what is on the picture in case a stranger or your spouse might not know what it is.
Step 4: Hang with string where you want them.
It was fun, and we enjoyed it. They have been up for a week+ now and they are still fun to look at.