Tipster Bill Neuhauser gives us a quick keyboard-only method for creating a new layer.
"If you just want to create a new layer and make it current, how about trying the old-fashioned way? On the Command line, type the following, pressing Enter after each item:
Finally, press Escape. The hands are quicker than the eyes — the new layer is now created and current!"
Notes from Cadalyst Tip Patrol: Typing a hyphen (-) in front of a keyboard command starts the command without a dialog box. It can be done with many commands. This is a good method to use when invoking commands in a LISP routine, or to start a command in a toolbar button. Entering M tells the Layer Manager command that you want to make a new layer. It will default to a color of white and a continuous linetype. You can set the color by typing C and picking a color, then entering the name of the layer you want to assign that color to, all before leaving the –LA command. The prompt will default to the current layer. Do the same with linetype, and all the other settings.