They make something like that for autistic people and others that are non-verbal. The commercial product, which is essentially just a binder with printed words or pictures, is surprisingly expensive so lots of people DIY them.
They're called PECS, Picture Exchange Communication System. A speech therapist is trained to work with people who have verbalization or accent issues and help them work through them. Or if they can't, suggest PECS so they're still able to communicate.
