quest tooltip was modified when some of the items became obsolete junk and unobtainable. problem is, the tooltip is broken badly.
first item on the list is the jellyfsh thing. that displays right.
2nd item on the list displays as inelastic thread, but is tracking regular diaphanous cloth.
3rd item just says Collect, and is tracking the thread.
nowhere does it tell you that you need diaphanous cloth, of course.