Here are all of the Icons for the mane 6 that I have created.
Contained in the ZIP file are all of the icons above with and without backgrounds in PNG format.
Request Icon pack: fav.me/d6n2vkqFeel free to use them however you want.
If you redistribute them in any way credit would be appreciated.
Apparently this was featured as a daily deviation on 6/22/2013.
Edit: Remade the Applejack icon.
Edit 2: Remade Fluttershy Icon.