Bigger Glyphicons
You can just give the glyphicon a font-size to your liking:
span.glyphicon-link {
font-size: 1.2em;
}
Here's how I do it:
<span style="font-size:1.5em;" class="glyphicon glyphicon-th-list"></span>
This allows you to change size on the fly. Works best for ad hoc requirements to change the size, rather than changing the css and having it apply to all.