What do you do with your PrtScr key?

I recently switched from a MacBook to a Thinkpad X1 Carbon running Ubuntu Linux, and the PrtScr key is annoying! I've settled on mapping it to the Win key, for symmetry with the left side of the keyboard. This seems wasted b/c my most common use of the Win key is Win+Arrow to resize and position windows, but the most natural way to do that is the left hand pressing the Win key and the right hand pressing the arrows.

What do people do?