If you've read any of my last few posts you may have noticed that I started including a twitter image at the end. You might not have realized that it was actually a fully functional button.
I hadn't seen anyone do this before. Luckily, Dev.to is open source, so it was easy enough to see that the markdown parser permitted a simple image button. I've included an example below.
<a href="https://twitter.com/<YOUR_TWITTER_HERE>" rel="some text"> ![Foo] (https://thepracticaldev.s3.amazonaws.com/i/gmrz82bjwhej1f1iqb1e.png)</a>
or (as suggested by @Artemix)
That code (with your own twitter URL added) will display a follow button for your twitter in a post. Example below