You know, I think I have made a dog's breakfast of this whole thing. I tried to take a 20 questions variant that we play (think of the answer--give a clue to the answer--if someone comes up with an alternate answer that fits the clues so far then you give another clue that has to exclude the alternate answer) and turn it into a riddle.
So if you are willing to change modes to the variant I have spelled out above, I will give the following clues in response to "silk"
The materials I'm made up of have been used in clothing, but it is pretty uncommon clothing, especially taken together.
Also, since the sprinkler clue probably requires regional knowledge, you could say that a woodpecker or a shrike has been employed to find me as well.