Once menus are open, the first letters of the item can be typed, e.g. typing "P" highlights Page Setup in an open File menu. Also, the Keyboard pane in System

Once menus are open, the first letters of the item can be typed, e.g. typing "P" highlights Page Setup in an open File menu. Also, the Keyboard pane in System Preferences can be used to assign keys to directly invoke any item in an application (but you have to type in the command's exact name). Actually, you can get to window toolbars...but only with the highly-intuitive keystroke "control-F5" (where control-F4 returns you to the main window, and also acts as a global rotate-between-windows-in-any-app key). From there, you can tab between items one at a time. Once you reach the end of the toolbar, the behavior is slightly different depending on how the application was implemented (Cocoa or not); it might switch to the main window and/or attached drawers, or it may rotate back to the first toolbar item.