Generators can be used for more than initial project scaffolding. Take the backbone[0] or ember[1] generators for models, views, templates, etc. that automatically generate the scaffolding work of creating dirs and files.
To get a the scaffolding for a backbone app, and the pieces of a "blog" MVC module:
yo backbone # generates your application base and build workflow
yo backbone:model blog
yo backbone:collection blog
yo backbone:router blog
yo backbone:view blog
grunt server
To get a the scaffolding for a backbone app, and the pieces of a "blog" MVC module:
[0] https://github.com/yeoman/generator-backbone[1] https://github.com/yeoman/generator-ember