So I had a few icons lying around from ages ago in 32x32. These icons are free to use under CC By 3.0.
That means as long as you put:
"Some Icons by Kem @ http://www.ascensiongamedev.com/community/profile/495-kem/"
In your credits somewhere, you can use these icons in commercial projects and generally do whatever you want with them except claim them as your own.