Prime example I stumbled upon recently: In Apple Music, you can press+hold an album or song to pop open an action menu. I use this a lot for adding songs to the queue. There's an item to add it next in the queue, and another to add it last in queue. Usually if I want it somewhere specific in the queue, I'd just add it next and then move the song where I wanted it, but if I'm adding an album partway through the queue, that means you'll be dragging a bunch of tracks manually. So I thought, "it'd be nice if I could just drag things exactly where I want in the queue and drop it there." And then I figured I'd actually try it. If you press and hold a song/album and yank it from its place, it stays under your thumb. You can then either operate with another finger to open up the queue, or hold your thumb over it to pop it open, and then just drop it exactly where you want in the queue.
Not the first time I've come across something like this, but it's the kind of thing I only find on Apple platforms, particularly with their own apps. As much as I liked Google Play Music, you couldn't do it there, and I just checked Spotify and it doesn't let you do that either.