If you are a fan of minimalism free icon, then Random Stuff Iconset vol 3 is best choice for your next project. The featured resource of the day is a collection of Free Random Stuff Iconset vol 3 that would make a nice addition to your resource library.
Download free flat icon set file and use it as you wish to use it. The PSD Mockup created by Dribbble.com.
If you want more icon, you can check the Free Icons.