Spinners
Check the markup dropdown for the spinner names.
But feel free to spin any of the icons just by adding the handy dandy .icon--spin class.
Example
Markup
<svg class="icon icon--xxl icon--spin"><use xlink:href="#ei-spinner"></use></svg>
<svg class="icon icon--xxl icon--spin"><use xlink:href="#ei-spinner-2"></use></svg>
<svg class="icon icon--xxl icon--spin"><use xlink:href="#ei-spinner-3"></use></svg>
Source:
icons/_icons.scss, line 18