Create tab and accordion type widgets without writing a single line of code.
Search for "Tabbed Widgets" in ‘Plugins’ › ‘Add New’. Install it.
Under ‘Design’ › ‘Widgets’ drag a new "Tabbed Widget" (from the list of Available Widgets) into a sidebar where you want it to appear.
Widgets that have configuration settings must be placed in the 'Invisible Sidebar Area' before they will appear in the drop-down menu.