Justin Tadlock

<p>A plugin for allowing users to set a custom background on a per-post basis.  This plugin hooks into the WordPress <code>custom-background</code> theme feature and overwrites the values on single post views if the post has been given a custom background.</p>
<h3>Features</h3>
<p>This plugin creates a custom meta box on the edit post screen.  From that point, you can select a custom color and/or image.  If you select an image, you’ll be presented with additional options for how the image appears on the site.</p>
<h3>Requirements</h3>
<p>Your theme must support the core WordPress implementation of the <a href="https://codex.wordpress.org/Custom_Backgrounds" rel="nofollow ugc">Custom Backgrounds</a> theme feature.</p>


Custom Background Extended

Allows users to create a custom background on a per-post basis.

Aelora

<p>Adds a list of any attached files to the end of posts and pages.</p>
<p>Attached files are displayed with a link so that they can be easily downloaded, along with a 16×16 icon identifying the type of file and file size.</p>
<p>Thanks to <a href="http://www.famfamfam.com/" rel="nofollow ugc">Mark James</a> for the outstanding silk icon set, and for licensing it under the CC license.</p>


rAttach

Adds an attached files list to the end of posts and pages

Custom Background Extended vs rAttach