pflonk

This plugin allows you to pass content to any sidebar from the page without using userdefined fields. Therefore it is possible to use the WYSIWIG-editor of your choice.
How it works: 
This plugin comes with a new enclosing shortcode [sidebar_content][/sidebar_content] where you can place any content, you want to have displayed in the sidebar. You will be able to use other shortcodes within this shortcode to use galleries, videos or any other stuff in the sidebar of your choice.
Additionally there will be a new widget which you can insert into the sidebar you want to have the content displayed. 
If you would like to pass content to an existing sidebar, there is another possibility using the [insert_sidebar_content] shortcode in any place you want. You are able to pass an id and/or a class to that content, to be able to style it with css as you like. This happens by simply adding: 
[insert_sidebar_content id=”yourID” class=”yourClass”] to the shortcode. You can of course use just one or none of them. If you do not specify any custom class or id, there will be a standard class and id called “insert_scfs” applied to the content, wrapped in a div.
<h3>Features</h3>
<ol>
<li>Widget</li>
</ol>
<ul>
<li>optional title (if empty, no tag will be generated)</li>
<li>optional title tag (default h3)</li>
<li>optional title tag CSS-classes</li>
<li>optional content-wrapper tag (default div)</li>
<li>optional CSS-classes for content-wrapper tag</li>
<li>optional CSS-id for content-wrapper tag</li>
<li>default values for every of the above possibilities</li>
</ul>
<ol>
<li>Shortcodes</li>
</ol>
2.1 Content-Enclosement
<ul>
<li>[sidebar_content]CONTENT[/sidebar_content] for use on any page</li>
</ul>
2.2 Widget-Display
<ul>
<li>[insert_sidebar_content id=”yourID” class=”yourClass”] to display the content from the [sidebar_content]-Shortcode in any widget you like</li>
<li>applicable id and classes</li>
</ul>
You will find further support on http://dev.offensichtlich.net
<h3>Thanks</h3>
Thanks to the authors that provided information about how to implement this simple little function that I just put together:
Ryan Bosinger 
http://www.ryanbosinger.com/boztown/2013/03/07/wordpress-custom-content/
1st-tec.de 
http://www.tipps.1st-tec.de/wordpress/39-wordpress/sidebar-widgets/152-eigene-widgets-fuer-die-sidebar-erstellen.html

Sidebar-Content from Shortcode

This Plugin enables passing content to any sidebar from the page without using userdefined fields. Therefore it is possible to use the WYSIWIG-editor  …

ArielK

Yakir Sitbon

pojo.me

Please Note: This plugin is only for <a href="http://pojo.me/?utm_source=wp-repo&utm_medium=link&utm_campaign=device-widget" rel="nofollow ugc">Pojo Framework</a> users – Pojo is a premium themes.
If you have a responsive website, Pojo Device Widget plugin is created especially for you. If you wanted to display a widget for: Desktop, tablet or mobile device (Phone), you can do it easily and simply using the selection box at the bottom of each widget. 
Pojo Device Widget plugin will save you time encode and write code, and leave you with a clean Sidebar area. The plugin only adds CSS settings by Media Query screen:
<ul>
<li>Desktop – 980px and up</li>
<li>Tablet – 979px to 768px</li>
<li>Phone (Mobile) – 767px and below</li>
</ul>
By default plugin defines all the current widget “Show on all devices”, so all the widgets are always displayed. You can check the effective plugin By: Reducing / Expanding your browser window.
Contributions:
Would you like to like to cotribute to Device Widget? You are more than welcome to submit your pull requests on the <a href="https://github.com/KingYes/wordpress-aryo-device-widget" rel="nofollow ugc">GitHub repo</a>. Also, if you have any notes about the code, please open a ticket on ths issue tracker.

Pojo Device Widget

Allows to easily control the display of widgets by the specific device: Desktop, Tablet or Mobile on your WordPress site with Pojo Framework.

Sidebar-Content from Shortcode vs Pojo Device Widget