Is there a way to stack icons in avatar flair?

Fortsetzung der Diskussion von Automatically add group flair to members' avatars:

I’d like to give people in my neighborhood forum avatar flair indicating the zone they are in. We have 5 zones indicated by color and number. We want people to get accustomed to thinking about the zone they are in so when an emergency happens they immediately think to go to their zone’s gathering place. Right now it appears only dice are available with numbers, but the best would be some sort of map icon with a number on it.

I found some references on the interwebs e.g. to Blog Awesome — Stacking Text and Icons but I am not sure how to use it in discourse. I know I can solve this by uploading images, but would be nice to find a way to do it with icons.

Screen Shot 2021-01-30 at 10.35.15 AM