The iLinux icon set provides more than 18,000 different icons from various operating systems, including OS X and Windows. Here's how you can install it in Debian Linux.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
cd && wget -O iLinux-icons.deb http://goo.gl/eA3FBc
sudo dpkg -i iLinux-icons.deb; rm iLinux-icons.deb
iLinux icons are well designed, elegant and this icon set contain icons from different operating system Ubuntu, Windows and Mac. It gives different kind of feel on desktop.More at Noobs Lab
Additional Debian resources