You can find quite a few desktop icon collections (zip archives) in the downloads section (stuff » downloads). At this time we only offer Windows (.ico) format icons.

So why are there only a few dozen downloadable icons? The pixel art found on this site is typically 48x48 or larger and is perfect for buddy icons, forum avatars, etc... what they are not specifically designed for is desktop icons. Since the typical size for icons in the Windows world is exactly 32x32, a large portion of the pixel art icons do not fit properly.