Restore the Show Desktop icon

Have you deleted the Show Desktop icon from the Quick Launch toolbar by mistake? It can be recovered very easily.

Open Notepad and paste the following into it:

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

Now save it as a SCF file (e.g. Show Desktop.scf)

That's it. Now you can drag it back to quick launch.