If you want an original phone charger when you come to Japan, these might be for you. A mixture of Hello Kitty, Rilakkuma and then original JR train phone chargers. You can power up your phone with the Yamanote Line!
Couldnt hold the iPhone far enough away and get a clean shot so these are a bit blurred. Looks like most of these are for au phones. I am sure there are some DocoMo ones around as well. Less sure about iPhone battery rechargers.