There’s a thing called “tagmoji” on Micro.blog—to help with discovery—that I basically haven’t been using because I don’t especially like the way it looks when prepended or appended to my posts. That said, I’ve started using some of those emoji (as well as some proposed ones) just to give some visual variety when browsing my blog, but only as stand-ins for actual in-sentence words. They generally won’t get picked up by Discover, though, because they won’t necessarily be in the first 280 characters of my posts.