A recently published Apple patent application suggests the company has been working on a way to add a speaker to the iPod nano and iPod shuffle. Entitled “Speaker Clip”, U.S. Patent Application #20110274303 describes a rear clip, similar to the one found on current-model iPod nanos and iPod shuffles, that incorporates a piezoelectric speaker in a recessed region in the clip, with perforations to allow the audio to pass through. Notably, one of the drawings included in the patent shows a round hole in the rear clip of an iPod nano-shaped device, serving as evidence that the company has been experimenting with the idea of added a camera to the device, as was suggested by a part leak earlier this year.