Lying atop a bluecap mushroom in plaint sight is the following note:

Druids and others,

Jacques Montezzi's goblin has apparently summoned a penguin into the Underdark. He wishes to turn it into a hat but is willing to sell it to you. I suspect you would prefer the latter option.

Best regards and a beautiful day to you, Senestia Avarscanti

A second note is added:

P.S. The goblin has stated a price of four thousand gold pieces, but this is a price he has decided upon randomly without Jacques Montezzi's consent. Perhaps you might wish to try dealing with the goblin directly.