A simple trick I wish I had learned earlier: Command + Click any of the little menulets and you can drag them around and even drag them right off!
However, some of them seem to resist being put back through any settings tabs. But, if you navigate to your main hard disk (Usually "Macintosh HD"), System -> Library -> Core Services -> Menu Extras, you can double click on those and add them back. A neat little hack. There are many more developments that need to be blogged about, but I am indolent.