On the Laravel News site there's a quick post highlighting a tool that can be use to help automate adding sites to your local Homestead environment - Homeboy.

Homeboy is a new package for Laravel Homestead that allows you to add a new local development site quickly. Once you run the command line tool, it will update your host file to point your dev domain, update your Homestead.yaml file to include mapping to for the new project and create a database mapping, and finally, it’ll re-provision Vagrant.

The post also includes a screencast the project has shared showing the tool in use (though the choice of soundtrack is questionable). It basically works as a shortcut to adding the changes to the files yourself, making it simpler to spin up new sites and environments quickly.