I would love to design a set of icons for a Mastodon or other fedi app.
The closest I've got to that is releasing my own custom set on Ko-fi (which is Free/PWYW) https://ko-fi.com/s/9359968cf7
Do you want an icon or other illustrations for your project? Give me a poke!
I've designed for apps, and software across mobile and desktop, including 100s of in game skill/status icons for a popular Discord game.