You can change nearly any desktop icon on both Mac and PC. To change desktop icons on a Mac, open the "Get Info" menu and paste in the picture you want to use. On a PC you'll need to make a .ICO file, ...
Windows: If you've put off tweaking the size of your desktop icons because you assumed it would be a pain, it's time to enjoy some hassle-free resizing without digging in menus or replacing icon packs ...