Idea to include in quiet time box: Hot glue rubbing plates. Make your design with hot glue on a square piece of cardboard, let dry and then hand it over to the kids with some sheets of paper and crayons to rub over.
This is our play therapist from school! lots of play therapy ideas. fishing for feelings, two sided puppet, Animal Projection Technique, Turn a Photo Album Into a Feelings Book, make your own stress balls