Last week, I have been practicing different ways of doing partial hanging and will share which method has worked the best out of all. In order to succeed partial hanging, is to fully block the carotid arteries on both sides of your neck, around 80-90% of the blood flow in the blood vessels has...
sanctioned-suicide.net
This is for partial hanging. You could try buying a rope online. Though in my past hanging attempts I just used a string from my robe it didn't break.
I'm not sure about full suspension hanging.
Also why can't you buy a rope without looking suspicious? Though you could probably try a jump rope I'm sure that would work.