Icon Shock gives away a massive set of 1325 pixel perfect icons, in 16x16px and 12x12px, including 3 color variations. Check their website for a preview of the entire set before downloading.
[notification type=”information”]Licence: free for personal and commercial projects[/notification]
[button color=”green” link=”http://www.iconshock.com/icon_sets/mini-icons/”]Get the 1325 Pixel Perfect Icons[/button]