Automated cygwin install. Just download the project as a zip file, extract and run cygwin-install.bat to install cygwin + apt-cyg + packages required for apt-cyg + optional packages.
You can edit the batch file to specify which optional packages you'd like installed.
Created by wjrogers: https://gist.github.com/wjrogers/1016065. Original project: https://github.com/rtwolf/cygwin-auto-install/ My fork: https://github.com/danielthegray/cygwin-auto-install
I (Daniel) added folder symlinking and some environment setup that was to my liking.