Let's Play with Shapes! Stamp Set 1. Played with children a couple of times and then stored. This is the "Let's Play with Shapes! Stamp Set" from Kodomo Challenge. It's a children's stamp set featuring characters Shimajiro and Mimirin. It's a colorful item that children can enjoy playing with. The product includes 6 types of stamps. You can combine the stamps to draw faces and other pictures.