I love Japan and I love Japanese gadgetry. Especially the bizarre and useless stuff. Which is why the newly-introduced neck stretcher really tickles my fancy.
If you’re brave enough to use your neck stretcher, simply place it around your neck, then use the handpump to send air through the tube. This, apparently, slowly stretches the back of your neck, giving you a "refreshing sensation".
You can pick this up in Japan right now, but no news of a UK release date as yet.