Mind-Blowing Japanese Inventions You Won't Believe

11. Bath Cushion or Phone Strap

What it is: A bath cushion with a waterproof phone case Invented: 2015 Average Price: $37 The Bath Air Pillow Smartphone Holder by Thanko permits phone usage during baths without water damage risks. It functions as a comfortable back support too.

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Shower Cushion/Mobile Phone Stand @RandomGoodStuff/TTwitter.com Offered in gray, pink, or white, this waterproof pillow enhances bath time enjoyment and convenience.