brahmnan

If you want user avatars to be displayed quickly and do not use external services, the module for generating “identicon” avatars using “canvas” is suitable for you. 
“Canvas” avatars will be generated for all users who do not have their own avatar images.

Identic canvas

This plugin creates user "identicon" avatars in "canvas" format using user email

sohel razzaque

This plugin will added to your wordPress side a nice and easy pie chart.you can change pie chart total area width,single pie chart area width,total area background colour,pie chart circle text colour and also change text colour & other setting from “pie_chart” menu in dashboard. This plugin will enable pie chart your wordpress theme. You can embed pie chart via shortcode in everywhere you want, even in theme files .
Shortcodes
shortcode in dashboard page/post/widgets
[pie_chart_list category=”category come to post*”]
shortcode in theme page
*post category and attribute category are same
<h4>Plugin Features</h4>
<ul>
<li>you can change pie chart total area width</li>
<li>you can change single pie width</li>
<li>you can change background colour</li>
<li>you can change pie chart circle text colour</li>
<li>you can change pie chart text colour</li>
<li>you can add category in your pie chart</li>
</ul>

sr-piechart-wp

Easily create and manage  a piechart .Get a Fancy jQuery Pie Chart with a simple shortcode

Identic canvas vs sr-piechart-wp