Help What did the girl use in the “how the choking game kills” video?? What was her set up? Or the Syrian girl? What did they use? Have you figured it out?

[KAZ-2Y5]

Where did the Syrian girl tie her slipknot? To something in the wall? I'm confused have you guys ever had similar looking set ups to these two videos?
"How the choking game kills"
And the Syrian girl?

 

[4g1vvvven]

I was wondering that, seems some people knock themselves out with comfy looking neck braces or something