There’s a thing in Japan called Chindogu (which literally translates as “useless tool”). These are crazy, useless yet somehow useful inventions like a noodle-cooling fan that attaches to your chopsticks or a toilet paper roll hat for when you have a cold. On the surface, the square watermelon may seem like just such an invention. But, when you think about the lack of space in urban Japan, this simple feat (achieved by placing the growing watermelon in a square tempered glass box) makes an awesome fruit far more practical. The square watermelons stack easily on top of each other, saving space and making transportation easier and more cost effective. And then, when you get one home, it sits neatly in your fridge, taking up far less room than the outdated round model. This iphone (or ipod) cover is a tribute to the simple, elegant and awesome square watermelon.