The Radioball (pictured) is an FM radio
concept device without any dials, screens or buttons. Like other similar devices (here [10] and here [11]), the user rolls the ball to tune in to different frequencies.
Its designers tell Core77 (which highlighted the device as part of its Core77 Design Awards) that though “very soon the FM band will be part of our memories…there is something interesting in those analog memories — fussiness, imprecision, randomness,discovery.” They tried to replicate that experience with their device.
Find out more from Core77 here [12].