Found this nifty program today ‘SecondBar‘ it creates an extra menubar on your 2nd monitor which means you don’t have to move your mouse across both screens to access a menu item.
NB: Currently your usual menubar icons aren’t copied across, however there are some nifty extras like enabling you to right-click the maximise button to give a full-screen maximise (rather than the usual resize of ‘as big as OSX thinks you need it’).