"I love you to pieces" Valentines Day craft. Link has many other Valentine's Day craft ideas as well.
Valentine’s Day Crafts – Salt Dough Footprint Hearts
Little Feet Heart -Cute gift idea for new babies, a gift for Mother's or Father's Day, Valentines or for grandparents! Rub an ink pad on your kid's feet and press on paper. Cut into a heart and put it in a frame! This would also make a cute card!
Five Simple Valentine Crafts For Kids - Watercolor Valentines.