Claude Vedovini

A plugin that uses the featured image in your posts as a favicon for 
that post. You can also set a default favicon and use it as a default featured 
image.
<h3>Privacy Policy</h3>
This plugin does not collect any personal information from your visitors.

Featured Favicons

A plugin that uses the featured image in your posts as a favicon for

Nazmul Hossain Nihal

This plugin is for adding favicons to WordPress site.
Using this you can add favicons to :
<ul>
<li>Home Page </li>
<li>Login Screen</li>
<li>Admin Panel</li>
</ul>

WPFavicon

This plugin is for adding favicons to WordPress site.

Featured Favicons vs WPFavicon