SkyTemple:Icons
You can use the SkyTemple UI Icons on pages in this wiki.
To do that, first import the CSS for the iconography in your page using the following snippet somewhere at the top of the page (source editor):
This may not be possible to insert in the visual editor, so briefly switch to the source editor to insert this.
To actually use an icon, insert the following template:
The icon name can be taken from the GitHub repository. You can also insert this template with the visual editor, it will also suggest icons.