Material UI v5 (mui5) + Nextjs12 + styled-components, YES! you heard that right! Material UI Theming is vastly used in huge projects but the templating in setting it up might be cumbersome, that's where I come in, I just released a boilerplate made with the above technologies. Also comes with Airbnb style guides for react, Eslint rules, and Husky pre-commit hooks making you and your team's developer experience smooth.https://github.com/miami78/nextjs-mui-boilerplate