Starting a new project from a boilerplate and renaming/replacing/cleaning up the things.
It's a CLI Python script that copies templates to your desired location and asks you for replacement values. It works with regular expressions as well as strings and executes commands after cloning (e.g. initiate a git repo). It works of course for any language and any framework.
I started open-sourcing it and adding some things that will be useful for more people (e.g. files/folders to exclude, i18n, developer output, multiple template paths, install/setup script, etc.).