I carry a Kubotan
https://en.wikipedia.org/wiki/Kubotan with me since I was robbed on the street during daytime around 20 years ago. I am well-versed with it and only had to use it once, 3 years ago, which was a great success and saved me and a friend from taking harm. The oppenent, on the other hand, remembers that day with less joy. A Kubotan, despite its size, can be very painful if used correctly and is still inline with my hippie soul, because it does neither easily kill, nor does it harm severely if you do not want it to. At least it is up to you. It's just very painful for the needed amount of time to allow me to either surprise, escape or get help. Some people call this device "attitude adjuster". It surely changes the attitude of your opponent...
Here is my favorite EDC Kubotan, well rather "tactical pen":
https://www.amazon.de/dp/B003AACADM
It is also a working pen which helps a lot with social acceptance and general usefulness.
I don't know whether one can consider this as a "special move". But taking out something that looks like a fucking pen and then causing very suprising pain with it seems "special" to me somehow...
Another option would always be the Jedi move:
like in: "this is not the conflict that you are looking for".