93digital

This plugin is no longer be supported from v1.1.4.
93digital’s widget duplicator plugin adds a ‘Clone’ link at the bottom of every widget. Simply click ‘Clone’ to make a copy of the widget that you can then drag and drop to another sidebar.
PLEASE NOTE: 
With the release of WordPress 5.8, the Widget area has had an overhaul and now uses it’s own version of the Gutenberg editor. This sadly renders this plugin redundant as it is only built to work with the older widget area, plus the new area comes with widget duplication functionality as standard.
To keep using the old widget area and this plugin, please add <code>remove_theme_support( 'widgets-block-editor' )</code> to the active theme’s functions.php file. You should only do this if you know what you are doing!

Widget Clone

I want to suggest a new feature that you can add and would be  a great extension: 
the ability to clone multiple widgets at one time , i mean sometimes we need to use the same sidebar widgets in another sidebar in that case using your plugin we clone all the widgets then drag and drop them  one by one ... adding the feature i mentioned above will make that easier and would be a great extension 

Thank you !  

Amazing plugin ... Thank you !

It works with all standard widgets and with all not too complex third party widgets. Good plugin!

Long time no update, but it works

Easily duplicate or clone a widget with all of its settings in just one click.

owlwpplugins

Duplicate multiple widgets by drag & drop. so you can intuitively copy and paste widgets.
It is hard to copy widgets one by one manually. Using this plugin makes duplicating widgets very easy.
Widgets duplication procedure is the following :
<ul>
<li>Select multiple widgets you want to copy.</li>
<li>Then drag and drop “Coied Widget” which in clipboard to any position.</li>
<li>Selected widgets is duplicated at that location.</li>
</ul>
Or, you can duplicate widgets individually.
For more detailed usage, install this plugin and read usage manual by opening “Settings” -> “WP Widget Clipboard” from the menu.

WP Widget Clipboard – Duplicate widgets intuitively

Duplicate multiple widgets by drag & drop.

Widget Clone vs WP Widget Clipboard – Duplicate widgets intuitively