If you like Font Awesome, you're going to love Black Tie!
             

fa-caret-square-o-up · Unicode: f151 · Created: v3.2 · Categories: Web Application Icons, Directional Icons · Aliases: fa-toggle-up

After you get up and running, you can place Font Awesome icons just about anywhere with the <i> tag:

fa-caret-square-o-up
<i class="fa fa-caret-square-o-up"></i> fa-caret-square-o-up

Looking for more? Check out the examples.