This DIY craft is a perfect Valentine's Day activity for kids! Youngsters can get excited about the holiday as they use their own construction paper, markers, stickers and more to create a one-of-a-kind memory box that's ideal for saving all those special valentines. This heart-shaped box is also a sweet way to present a small but special Valentine's Day gift or wedding gift. Cardboard. 4 1/4" x 3 1/2" x 1 1/2"