jomol

Simple Font Awesome Icon plugin will give you the Font Awesome Icon option in your post and page. From there you can choose the required icon and hit save. Then use the get_post_meta(‘post ID’, ‘font-awesome-icon’, true); function in the template file and you will get the class name which can be used with i tag.
Please take a look the plugin page for more details: [https://codingdom.wordpress.com/simple-font-awesome-icon/)

Simple Font Awesome Icon

Simple Font Awesome plugin will give you the option for adding Font Awesome icons for your post and pages in the form of a meta box.

themelogger

This plugin adds Star Rating fields with font Awersome to Contact Form 7.
<h4>Visit the official <a href="http://www.themelogger.com/contact-form-7-star-rating-plugin-font-awersome/" rel="dofollow nofollow ugc">Contact Form 7 Star Rating field with Font Awesome icons</a> for view demo page & additional information</h4>
Features: 
 – setting option ‘Required field’ 
 – setting custom weights to each rating field: 
 – min (start) value of rating (optional, 1 by default) 
 – max value of rating (optional, 10 by default) 
 – step (optional, 1 by default) 
 – setting predefined (default) value of the rating (optional, 0 by default) 
 – using Font Awesome icons instead of images – set different icons for every rating field 
 – setting option ‘Show result value of rating’ 
 – setting id and class of the rating field (optional) – use it to style icons and result value (size, color, text-shadow) in css file 
 – shortcode to include rating result in email 
 – unlimited rating fields in one form

Contact Form 7 Star Rating with font Awesome

This plugin adds Star Rating fields with font Awesome to Contact Form 7.

Simple Font Awesome Icon vs Contact Form 7 Star Rating with font Awesome