kmohrf

Page-Cat-List is a WordPress Plugin (surprise) that you can use for generating a sorted list (where you can/must 
define the order) with items from pages and categories. That’s the whole story. Unfortunately WordPress does not 
implement this in its core-functionality so I had to build that on my own.
As of writing this Page-Cat-List supports:
<ul>
<li>mix category- and page-items and display them in one list</li>
<li>sort these items (first level only)</li>
<li>define a title</li>
<li>define a maximum depth</li>
<li>define a html-id for the first ul-element</li>
<li>most of the stuff you can do with get_pages and get_categories arguments:
<ul>
<li>exclude items</li>
<li>include items</li>
<li>etc. pp.</li>
</ul>
</li>
</ul>

Page-Cat-List

Integrates a widget that displays category and page-items in one html list with support for a user-defined order.

Aaron Butacov

The WordPress Access Keys Plugin allows you to add access keys to your navigation menus to improve accessibility of your WordPress website.
<ol>
<li>Activate</li>
<li>Add access keys to menu items under the Appearance > menu panel.</li>
<li>???</li>
<li>Profit from having an accessible site.</li>
</ol>
For <code>wp_list_pages</code> and <code>wp_list_categories</code> support 
Download the older <a href="https://wordpress.org/extend/plugins/access-keys/" rel="ugc">Access Keys plugin</a>. The older version also allow you to add access keys to pages and categories. This works with any page or category list that is called with <code>wp_list_pages</code> and <code>wp_list_categories</code> respectively.
It is simple to use this this plugin. On the Admin panel it lists pages and categories with a current access key, and in a separate list it lists the pages and categories without access keys. Just add an access key just type a number or letter in a text box and click the save button. The categories or posts will then move to the top list, and you will feel great about be kind to your users.

Access Keys for WP Navigation Menus

Add Access Keys to WordPress 3.6 Nav menus to make your website far more accessible.

Page-Cat-List vs Access Keys for WP Navigation Menus