Play Doh Mr Potato Head playdough toy review with Rex from Toy Story 3. Watch DisneyCarToys build Play-Doh Mr. Potato Head and his playdoh wife Mrs Potato Head. Rex from Toy Story, Toy Story 2, Toy Story 3, Partysaurus Rex and Toy Story of Horror appears in this PlayDoh video. Rex tries to help make carry the Play Doh cans, but Rex the dinosaur knocks them all over. This boxed Play Dough set was purchased at Toys R Us and comes with 5 cans of Play-Doh. The Play Doh in this set is just normal Play-Doh, not Play Doh Plus.