happymox

Display your selected post and page. 
A very simple plugin to add selectable post and page – for WordPress.
<h4>Features include</h4>
<ul>
<li>Easy to install</li>
<li>Use for any sidebar.</li>
<li>Get post(s) directly by a list of selected posts.</li>
<li>Widget to display the post feature image. </li>
<li>It will be displayed at random as the featured image of any post without an image.</li>
</ul>

Selectable Post and Page

working

FolioVision

Simple plugin which allows you to mass edit the description fields of your choice. In current version of the plugin it is possible to mass edit except the description fields also titles of pages, posts and categories and for posts it is additionally possible to edit keywords
<a href="http://foliovision.com/seo-tools/wordpress/plugins/foliopress-descriptions" rel="nofollow ugc">Support</a>
Supported description fields:
<ul>
<li>All In One SEO Meta Description</li>
<li>Thesis description</li>
<li>WordPress post excerpt</li>
</ul>

FV Descriptions

Simple plugin which allows you to mass edit the description fields of your choice.

Selectable Post and Page vs FV Descriptions