I gave Caden some old wooden stamps to play with the Play Doh. He loved it. It was easier than the molds that come with Play Doh kits because those you have to smash the dough inside of the mold. It's tedious even for adults to remove the smashed dough without ruining the imprint. Well, with stamps, you can just press and have a nice, quick image. Activity grade A for ease and low cost.
We also made Play Doh bugs with googly eyes, pipe cleaners, and pom-poms. Grade of B because I am the only one whose bug remotely looked like a bug! Little ones will enjoy the googly eyes, pipe cleaners, and pom-poms to make all sorts of new creations. Elements can be used again and again.