Okay so how about
self-warming needles (ie they actually have a heater in them)
magnetic therapy needles (have magnets in them to alleviate arthritis WHILE you knit!) - only would they stick together while you knit?
combine the above two- warmed, magnetic therapy knitting needles LOL
true turbo needles with little motors and movement sensors in them to augment every movement of the needles you make
vibrating knitting needles??
What will they think of next?!?? Knitting needles that double as...oh, I'm not going to go there. :roflhard: