A sound artist from New York, now based in the desert of Texas, makes neckties woven from audio tape, prerecorded with sound collages made from samples recorded in New York. If you dismember an old Walkman and pull the playback head out, you can run it over your tie, making noise.
If you want to order one (and live in the US), you can do so here.
(I can imagine this sort of thing going further. If one could make magnetic fabric, and imprint it with wave patterns, one could essentially make cloth that functions as a wavetable synthesiser, and fashion it into playable clothing.)
The wearable fabric came first. Look at the original Sonic Fabric dress and handbag. The neck tie is just the most recent, and least eccentric, variation on that.