I can remember all of the various warnings about demons. Yard sales were a prime demon hangout. You'd be surprised how many demons can be accommodated in one antique chair....and they would just wait there, for years maybe, sitting in some cold dark basement....just waiting for the errant JW to give them a new home.
Then, of course, there was the Exorcist. I couldn't watch that movie for years because of the stories....and the book? No way, Jose, would I take the chance of having that demon-infested tome in my library. But the pull......of.......the.......demons.......finally won out. I saw the movie....gross in some spots....but nothing happened. THEN.....THEN.....I bought a used copy of the book at Half.com (double trouble....demon-infested, and USED, to boot!)
It was a good book, but nowhere near as scary as some of Steven King's stuff. And nothing happened.
I remember, too, all of the articles about demons in the publications. Usually, the problem was caused by some religious article--usually Catholic--like a picture of Jesus, or a rosary, or cross, or some religious book. The only way to solve the problem was to ferret out these evil icons and burn them. This burning was generally accomplished only through a liberal application of gasoline, since the demons would fight their destruction. Then, when the flames had finally taken hold, these articles would scream as they perished.
Couldn't do Yoga, since meditation is part of it, and everyone knows (as pointed out by Mother) that emptying your mind through meditation allowed the demons instant access to possess you.
Windchimes? Not a chance....they were spiritistic and acted like a calling card for any feral demons that were living out in the woods without a home.
One should read ONLY Watchtower literature and listen only to Kingdom songs to be absolutely sure that one would remain demonfree....and fresh.