virtuexru

This plugin will allow you to add one image or logo of your choice (defined in settings) 
to your RSS feed header. It is very simple to install/maintain and will add your website’s 
presence to your RSS feeds by giving it this personal touch.

RSS Add Image Header

This plugin will add an image/logo of your choice to all of your RSS feeds.

Scott DeLuzio

AMP-MODE

WordPress Login Logo Editor is a plugin that easily lets you edit the form and logo shown when logging into your WordPress site. WordPress Login Logo Editor allows you to edit:
<ul>
<li>The image above the login form on your WordPress site.</li>
<li>The URL that a user gets directed to when the logo is clicked. By default you are directed to http://wordpress.org.</li>
<li>The title text that appears when your mouse hovers over the login logo. By default this text says Powered by WordPress.</li>
<li>Style the login window with custom CSS.</li>
</ul>

Login Logo Editor

Easily lets you edit the form and logo shown when logging into your WordPress site.

RSS Add Image Header vs Login Logo Editor