Yorozu Sound Revolution Kit

The set comes with a device that looks like a cardboard milk box which actually turns out to be speakers for the device.

In truth, however, it is just an ordinary milk carton that comes with the set. What the Yorozu Audio & Sound Revolution Kit actually lets you do is use almost anything as a speaker. With the help of a vibration extension which you can connect unto any surface (i.e. the milk carton), you can listen to the sound inside the Kit through that object.

You can even bring around with you this evidence for easy listening because it is portable. Whenever you feel like listening to music, you just need to grab a small box, your suitcase or some other thing you have with you and turn it instantly into an audio speaker.