So far during the whole span I've proc'd a imperial moth a few times, which is good because they sell for a couple hundred on the AH.
Then I get a proc for imperial silkworms, and so far I've gotten more than a couple dozen between my tailors. I'm gonna ask tailors what do you do with them?
They auction house for around 1 gold, which is hardly worth the listing fee. Plus the AH is flooded with them from other tailors. I just vendor it for 12 silver and 50 copper.