I've never been to Japan, but after watching a few Japanese movies/shows I couldn't help but notice that I saw the same thing in more than one unrelated video.
Does anyone what these things are?
I've seen a few times these balls wrapped in nets being hung from the ceiling.
Does anyone else do this? And why?
Also, are the balls made from rubber? Or glass? (because when I translated the website of the first image, it mentioned 'glass ball', but I figured it might be a translation error).