Restore Show Desktop Icon to Quick Launch

If the Show Desktop icon is deleted from Quick Launch, the procedure below will recreate the file.

Open Notepad and enter the following text: 

[Shell]
Command=2
IconFile=explorer.exe,3
[Taskbar]
Command=ToggleDesktop

Save the new file as Show Desktop.scf then drag and drop the icon on the Quick Launch bar or whatever location you want the shortcut to appear.