The Microsoft developer site has a great resource for Fluent UI icons. Fluent is the new name for Fabric. But it’s not easy to search for an icon. Needs a bit of Bing perhaps. This site https://www.flicon.io/ solves the issue. I can’t take create for it, but Chris Kent created the site. It’s fantastic. It's worth following him on Linkedin - lots of good activity there.
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