Hi Pluntke,

Let me explain something to you: Helix Ultimate uses Font Awesome 5 Free library. It means that you can use all those icons anywhere you want. Just by class name according to guide from FA website.

URL: https://fontawesome.com/v5/search?o=r&m=free

Example HTML code: <span class="fas fa-yin-yang"></span>

And yes, you can use them inside Custom module, becuase it has Text editor with option to switch to HTML (Source code) mode.

Thanks