I especially loved the hand motion practice she taught here. It reinforces it into our own brain, that is something that will help to remember. It creates the boundary.
Or not even validating the narcissist. They do things, well, its all here. I don't want to influence anyone, but this even has info about how to react when you get caught off guard.
I know the headphones is not going to work for me, for I have eczema, I've often envied others who get to listen to headphones, and would walk down the street that way if I could. But there's other stuff here. Lots of good advice.
Its true though that if you act like your super busy, very important person, that will attract them. Be busy but boring, this will make them go away. You don't owe them politeness or civility. I love that, I never knew that. If they lose it on you, she talks about that too. We think we have to respond to narcs outrageous behaviour, but we really don't.
Overall, I feel these are good tips, to help with real life, in real situations. No contact is nice, but what to do when when you run into them.
Remember don't act rude, that's just too juicy for them, and they will attach, you want to be boring.