Using Stream Decks to control some office lights from my desk without having to open the Indigo app (the Indigo server is in my wiring closet in another part of the house), my iPad, or a webpage. Just a single button push. I spent a couple of hours trying to write a plugin to StreamDeck to make it crossplatform (using Javascript) and realized I was making it too hard. I just created an Automater application and have the button "open" it. I have far, far more devices in the house. In fact I've already thinking I want to use it for garage door status (open/close).
Just controls a few scenes in my home office, but I'm thinking I could get very elaborate if I take the time to write an actual stream deck plug in - including reflecting status (the mail icon shows number of unread emails for instance and the CPU one reports CPU utilizatoin)
Close up of the buttons from the editor
Automator code (changed from my personal information to make generic)