I was busy these days, with a PhpBB client of mine. I just tested few new themes for my upcoming theme, and came across a great theme by Jauhari. This theme was having a great feature that enables the admin gravatar as favicon. This was something that took the pain away of developing a new favicon.
I tried to search for this and found a plugin Gravatar Favicon developed by Patrick Chia. Which helps you achieve the desired results of favicon generation.
This plugin allows you to generate a gravatar favicon for your blog and admin logo included Apple touch icon. Just activate the plugin, and it will add gravatars to your blog template and admin panel automatically, no setting and nothing. But you must enable your avatar(Discussion Settings). (W6A4N4-L26P6-WSH)
This is how your plugin looks like, just check the screenshot.
Note: This post does post does not claims that Jauhari had used the same plugin in its theme development.

look neat, hope that it come with the function to choose which email we want to use, especially if we want it to be different that what we use for comment
I agree with izzat aziz..
Nice plugin, I use only avatar for all kinds of site: gravatar, social media sites, IM, email… and it helps people recognize me.
Using plugin is OK but i think that simply adding .ico in the root directory & including two lines of calling code in Index page, the simplest way to do that.
Thanks for Sharing this plugin.