I was just given a leather mask from a friend last week who had it and the piece had been sitting at her house for years.
It's old and VERY well made. Not black. A dark brown with thick leather.
I think that it looks fun. But I've never tried the mask thing. Now, though, I can!
The gas mask ... one of the nastiest porn shots that I ever saw was a puppy getting fisted by a bad dragon product by his "daddy". He was in a sex sling, bound up and was wearing a gas mask.
The short video was nasty and hot. Emphasis on nasty. So I guess that it has a place in hard core play.
I'm interested in reading what others have to share!!!