This past spring, Japanese peripheral maker Hori said it would make a specialized Miku Hatsune rhythm game controller if enough people pre-ordered it. Enough people did, and Hori made the controller. And it's huge.
The controller is for the PS3 version of the Hatsune Miku arcade game.
Just look at it! The controller isn't exactly something you'd want to lug over to a friend's house. Heck, even carrying it from one room of your house to the next seems like a chore. The controller is actually around 2.2 feet by 1.4 feet and looks even more enormous when placed in a small Japanese apartment, next to a little electric fan.
The controller is officially called the "Hatsune Miku -Project DIVA- Dreamy Theater 2nd Dedicated Controller". It costs the equivalent of around US$360. Big money for a big controller.