Here is a smart garment that translates the rhythm of knitting into sound. As Teresa Flour Lamb, the artist behind Cyberknitics, explains, the garment detects the movement of the hand to generate sound, so wearers hear their own rhythm as they knit. The buttons on the forearm allow users to alter the sound.
The sound produces can be heard through a speaker or headphones. The design is meant to be modular. More info is available here.