I was at the store the day after Halloween and they had some Mr. Potato head type face parts on a super sale. They were parts made to stick into a pumpkin to decorate. I thought they would work really well with play dough.
I took the face parts and dumped them onto the table and let the kids explore their play dough. They made some amazing faces and it was a lot of fun. I am so glad to have picked these parts up for so cheep. If you see them in your area, they are worth picking up.