Maštarija

Do you often need to create small pieces of content that should be present on e.g. every product page, but don’t justify writing a full on plugin?
Do you mostly work with designers or users that sometimes need to update some of that content, but they don’t know their way through Git, FTP or code in general?
If you’ve answered yes to any of those two questions then this plugin is for you!
Heckler allows you to create reusable pieces of code or text and execute / display them on any wordpress hook (after <code>init</code>) or use them as a simple shortcode within your content.
If you have some coding skills, you can programm a rule which determines if the text should be shown, or the code should be hooked or executed.
As an added bonus, there’s even a VIM mode in the code editor to make your life as a developer in this world of makeshift plugins just a little more bearable.
If you wish to contribute to this wonderfully horrible plugin you can do so on its <a href="https://github.com/mastarija/heckler" rel="nofollow ugc">GitHub repository</a>.

Heckler

Create custom text and code snippets, and attach them to hooks or use them as short codes, along with programmable display rules.

Maxime Pertici

This Menu Item Types Add-on adds the possibility of adding action in your navigation menus. 
This plugin extend <a href="https://wordpress.org/plugins/menu-item-types/" rel="ugc">Menu Item Types</a>.
<h3>Use your custom action</h3>
<pre><code>/**
 * The executed hook will be prefixed with : mitypes_action_ .
 * To run my_custom_action_name, you need write :
 */

add_action( 'mitypes_action_my_custom_action_name', 'my_callable_function', 10, 2 );

function my_callable_function( $args, $item ){
 echo 'hello world' ;
}
</code></pre>

Menu Item Types — Action

This Menu Item Types Add-on adds the possibility of adding action in your navigation menus.

Heckler vs Menu Item Types — Action