Simple plugin that lets you duplicate your existing widgets in just one click.

Simple clone widget plugin add a 'Clone this!'' link of every widget. Simply click 'Clone it!' to make a copy of the widget.

Adds possibility to create clickable widget for external and internal links. Support Widget Clone, Widget Background, user CSS Classes, Auxiliary color mark and Quick show/hide options!

Sidebar Content Clone is a WordPress plugin that allows you to clone all widgets from one sidebar to another sidebar by one click.