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. It's a fun art project and a lovely keepsake. Cardboard. 11 1/4" x 7 1/2" x 4 1/2" with a 6" x 1 1/4" opening for valentines.