A leather skull cap with a tail
This is an odd cap I spotted at a market, it's made of leather with a long section at the rear reminiscent of a nightcap in some ways.
The crude look of the stitching makes me think of something a goblin might wear in a fantasy image.
Another possibility might be a librarians cap or perhaps somewhere to took your long hair
I'm please with this find and hope to find a character or multiple characters to wear it.