Mario Peshev

Delete the posts from Custom Post Types that are no longer active for the install.
Navigate to Settings -> Remove Oldies and delete the posts from a given post type that is not active anymore.

DX Remove Oldies

Delete the posts from Custom Post Types that are no longer active for the install.

webdeveric

This plugin provides a dashboard widget that lists recently edited content for quick access.
Options (per user settings):
<ul>
<li>Number of items to show</li>
<li>Excerpt length – number of words (0 = hide)</li>
<li>Show only your edits</li>
<li>What post types to show</li>
<li>What post statuses to show</li>
</ul>

Recently Edited Content Widget

This plugin provides a dashboard widget that lists recently edited content for quick access.

DX Remove Oldies vs Recently Edited Content Widget