Answer:
One strand dangles. Two strands twist. Three or more can fashion this.
What is all over a house?
A disposable item to keep your waste organized.
Watches students at the prom to make sure there's no funny business.
Mountains will crumble and temples will fall, and no man can survive its endless call. What is it?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.