Consider not using Material UI

[HoraceShmorace]

There isn't really enough of a UI to justify the footprint of a material UI dependency, and it's awkward to compose it into apps that don't themselves use Material UI.

To make this really usable, consider using pure HTML, and allowing a className to be passed in per field to add styles. Alternatively, you could allow field elements to be passed in as props and composed, using React.createElement to add listeners.