I've never looked at a pair of chopsticks and thought to myself, "...if I could only use these as napkin holder rings." Then again, I am not a designer.
Designer Jacky Wu Tung Chi, on the other hand, had such a vision. That vision fleshed itself out in some sort of 3D imaging program to the picture you can apprecaite today—rings that fold out into chopsticks that double as straws. They're cleverly called Roll n' Roll.