chrisnorthwood

This plugin adds a panel to the Options screen in the admin that allows you to assign an image to a tag.
In order to make use of the image, you must alter your theme to include it where appropriate. In it’s simplest case, this is simply something like <code>echo get_tag_image($tag)</code> or <code><?php foreach (get_the_tags() as $tag) echo get_tag_image($tag); ?></code>, or something.

Tag Images

This plugin adds a panel to the Options screen in the admin that allows you to assign an image to a tag.

GB071

ecreateinfotech

This plugin automatically converts keywords in a post/product title and category to tags upon saving. It includes a user-editable list of words you want the plugin to ignore
<ul>
<li>Converts keywords in post/product titles to tags</li>
<li>Converts keywords in post/product category to tags</li>
<li>Includes user-editable list of words to be ignored</li>
<li>Setting to enable for title and category separately</li>
<li>Setting to overwrite previous tag and consider only title and category while generating new one</li>
<li>Converts on publish and update.</li>
</ul>
Multi-blog adminstrators take note: this plugin is especially helpful if you’re building a community-based site where tagging is important and your bloggers are not always diligent about tagging.

Auto Tag Creator

Automatically creates tags from post/product title and category, on update or publish.

Tag Images vs Auto Tag Creator