Archetyped

Favicon Rotator makes it easy to customize the favicon for your site. Just add a favicon via the administration page and it will be displayed whenever someone visits your site.
<h4>Highlights</h4>
<ul>
<li>New: Set icon for Touch devices (Android, iPhone, iPad, iPod Touch, etc.)</li>
<li>Simply point and click to add a favicon to your site</li>
<li>Supports adding multiple icons, from which a randomly selected favicon will be displayed.</li>
<li>Automatic icon conversion for large images (smaller files and faster loading)</li>
</ul>
<h4>Usage</h4>
<ol>
<li>Go to Theme > Favicon admin page to add/upload image(s) to use for the favicon</li>
</ol>
That’s it! The favicon will be displayed in visitors’ browsers when they visit your site
Notes
<ul>
<li>Verify that your theme uses the <code>wp_head()</code> template tag</li>
<li>If you add multiple icons, then a randomly selected icon will be displayed each time the site is loaded</li>
</ul>
<a href="http://archetyped.com/tools/favicon-rotator/" rel="nofollow ugc">More Information on Favicon Rotator’s Official Page</a>

Favicon Rotator

Easily set site favicon and even rotate through multiple icons

Chris Hadley

Richard Long

HeroThemes

“The best Favicon plugin” ★★★★★ – WordPress.org user review.
Simplified and powerful favicons for WordPress.
Add favicons in a flash with Heroic Favicon Generator. This plugin automatically generates favicons using images you upload or select from the media gallery. Support is provided for all modern favicons and automatic generation of the cross-compatible .ico with multiple embedded sizes. Supports different icons for various devices.
Be sure to check the installation and FAQ section to get started and if you have any issues.
<blockquote>
About HeroThemes 
 <a href="https://herothemes.com/" rel="nofollow ugc">HeroThemes</a> develop some of the best WordPress plugins, tools and themes, with over 26,000 customers and counting. If you like this plugin and want more news, themes and plugins, you can do the following:
<ul>
<li>Get the <a href="https://herothemes.com/themes/knowall-wordpress-knowledge-base/?utm_source=wprepo&utm_medium=link&utm_campaign=heroic-favicon" rel="nofollow ugc">KnowAll Knowledge Base theme for WordPress</a>, create a WordPress powered knowledge base site in minutes.</li>
<li>Check out the <a href="https://herothemes.com/plugins/heroic-wordpress-knowledge-base/?utm_source=wprepo&utm_medium=link&utm_campaign=heroic-favicon" rel="nofollow ugc">best WordPress Knowledge Base plugin</a>.</li>
<li>Answer Frequently Asked Questions with <a href="https://herothemes.com/plugins/wordpress-faq-plugin/?utm_source=wprepo&utm_medium=link&utm_campaign=heroic-favicon" rel="nofollow ugc">Heroic FAQs plugin for WordPress</a>.</li>
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</ul>
</blockquote>

Heroic Favicon Generator

Heroic Favicon Generator is your one-click favicon generator for WordPress.

Favicon Rotator vs Heroic Favicon Generator