When building an app with React Native you sometimes find yourself having to create your own modules. For example, we've encountered this need when building a UI component library for a React Native app. Creating such a module project isn't straightforward, and our teams report success using Bob to automate this task. Bob provides a CLI to create the scaffolding for different targets. The scaffolding is not limited to core functionality but, optionally, can include example code, linters, build pipeline configuration and other features.