HiddenMe: Hide Desktop Icons
Mac OS Utilities
Let your desktop breathe !
Hide your desktop icons with a single click!
"HiddenMe Hides all Your Mac Desktop Icons in One Click" - Lifehacker
"a button to hide all the clutter with a single click." - Business Insider
Note for 2.1.x users: You need to reselect the "launch at login" option
New in 2.2.3:
* Adjusts to screen changes
* Adds link to the Pro version