Take your icon game to the next level. Check out Fonticons, from the maker of Font Awesome.
Gimme Some!
Font Awesome
             

fa-h-square · Unicode: f0fd · Created: v3.0 · Categories: Medical Icons

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

fa-h-square 
<i class="fa fa-h-square"></i>

Looking for more? Check out the examples.