Any time I’m watching videos about music theory these days, I have my Striso out to try things out. Music theory clicks so much more easily for me with the Striso’s layout.
While listening to Jacob Collier talk about negative harmony, I had a suspicion. Sure enough. If you’re playing a melody, then flip the Striso upside-down (or use the function combo to do so), and physically play the same pattern, you instantly get a negative harmony version. There are some details to add, like knowing where your root note and fifth are, so you pivot around the point between them. And of course octaves become a matter of preference, especially if your talking about whole chords with extensions.
But I thought this was neat enough to share, though I’m not sure this is what people use this forum for or not.