This guide https://github.com/nayafia/lemonade-stand https://github.com/nayafia/lemonade-stand was written for OSS maintainers, but it could still give you idea

This guide https://github.com/nayafia/lemonade-stand https://github.com/nayafia/lemonade-stand was written for OSS maintainers, but it could still give you ideas on how to monetize your project. Good luck!