Grant Mangham

Express posts provides a widget to display either a subset of posts, the children of a page or its siblings.
The widget provides three modes.
Subset will list a given number of posts from your selected categories. Date, date format, and excerpt are all optional.
Children and siblings modes will list the immediate children or siblings of a page, respectively. You can include a placeholder in the widget title as a substitute for the parent page title. You can also choose to show or hide the widget on specific generations of pages, allowing extra flexibility on shared sidebars.
In common with all of my plugins, Express Posts strives to follow best practice in WordPress coding. If you spy a bug or see room for improvement, please <a href="https://wordpress.org/support/plugin/express-posts" rel="ugc">let me know</a>.

Express Posts

Express posts provides a widget to display either a subset of posts, the children of a page or its siblings.

Kenny

The goal of this plugin is to make is really easy for someone on 
Wordpress to implement the NotFound.org missing child page in 
place of their standard 404 page.
The HTTP 404 is the error that you see when a link is broken, 
or you navigated to web page that just isn’t there. It happens, 
and it’s one of the most common error pages you see.
Why not turn that into something that benefits the world? The more 
eyes that see a missing child, the more likely someone could be 
found.
Note: Activating this plugin will automatically replace your 
default WordPress 404 page. To stop it, simply deactivate.
All of the missing child notices are served within an iframe 
pointing to <a href="http://notfound.org" rel="nofollow ugc">NotFound.org</a>.
<a href="http://twitter.com/_kennyk_" rel="nofollow ugc">@_kennyk_</a> for updates, or visit 
<a href="http://codefury.net" rel="nofollow ugc">codefury.net</a>
<h3>Notes</h3>
Because of the current width of the NotFound.org page (720px), it only 
made sense to put it in a separate layout from your site, rather 
then embed it in the current theme. If NotFound.org eventually 
provides a more portable version, I’ll accommodate that too.

NotFound.org 404 Page

This is a Wordpress plugin that turns your 404 "page not found" error into a page devoted to helping find missing children.

Express Posts vs NotFound.org 404 Page