also see: collective purchase, conductive thread

also see: conductive yarn
conductive threads are usually manufactured for anti-static, electromagnetic shielding, intelligent textiles, wearable technology, data transfer and heating purposes. Most threads are metalized with an alloy of various metals, which can include silver, copper, tin and nickel. The core is normally cotton or polyester.
Conductive threads are uninsulated and sewing them tightly to metal [...]

also: loop stitch, fur stitch, crocet loop fabric
I really like the following loopy samples. There are different techniques and they can either be crocheted or knitted. The loops can be left as loops or cut and they will not unravel as the way it is worked essentially ties off the ends.

We haven’t done any consistent experiments for washability of conductive fabrics, threads and connections. But we have washed the Perfect Human costume containing the neoprene bend sensors more than twice and it is still functioning as before. We excluded the collar and the circuitry from these washed.