Play dough is a staple with any speech-language pathologist. You can find it in our bags, our drawers, our cars, our crates, and cabinets. We stock up at the beginning of the year, replace it at the winter break and even make our own when we want to add fragrance or glitter. But what is it about play dough that makes it a "must have" for SLPs? You will want to read on to discover the secrets behind play dough in speech therapy, and then download the BEST recipe for home made play dough at the end of this post.