Nick Ciske

Makes media library thumbnails match the WordPress thumbnail size or allows you to choose a new size in Settings: Media (or hard code a custom size named ‘mte_thumbnail’).
Also replaces the default “Crystal” file type icons with smoothly scaling SVG icons that better match the WordPress 3.8+ design.

Media Library Thumbnail Enhancer

Enhances media library thumbnails by making them larger and replacing the bundled icons with scalable SVG versions.

Jory Hogeveen

As easy as it gets. Add column classes to widgets with a select box, check whether the widget is the first, and save!
I’ve built this plugin for the Genesis Framework, though it will work with any theme that uses the (old) Bootstrap column classes.
You can also add your own classes through various filters to use this plugin with your theme’s grid framework.
<h4>Compatibility (IMPORTANT!)</h4>
This plugin does NOT add CSS for these columns. It ONLY adds the column classes to your widgets. The actual CSS should be added in your theme.
<h4>Filter: `genesis_widget_column_classes`</h4>
Allows you to change the available column classes
Parameters: <code>array</code> Default column classes. 
Return: <code>array</code> Array of column classes.
<h4>Filter: `genesis_widget_column_classes_capability`</h4>
Change the capability required to modify column classes. 
Since 1.2.2
Default: <code>edit_theme_options</code> 
Parameters: <code>string</code> The default capability. 
Return: <code>string</code> The new capability.
<h4>Filter `genesis_widget_column_classes_select_multiple`</h4>
Allow multiple classes to be selected. 
Since 1.3 
Return: boolean.
You can use these filters inside your theme functions.php file or in a plugin. 
You can find me here:
<ul>
<li><a href="http://www.keraweb.nl/" title="Keraweb" rel="nofollow ugc">Keraweb</a></li>
<li><a href="https://github.com/JoryHogeveen/genesis-widget-column-classes/" rel="nofollow ugc">GitHub</a></li>
<li><a href="https://nl.linkedin.com/in/joryhogeveen" title="LinkedIn profile" rel="nofollow ugc">LinkedIn</a></li>
</ul>

Media Library Thumbnail Enhancer vs Genesis Widget Column Classes