I've talked about fixed gear head accessories before. Now I just must keep on repeating myself.
The cycling cap in the pic above and for sale here might not be quite THE ultimate fixie hipster head accessory like that Cinelli hairnet helmet but I could see someone digging it nonetheless.
"Very Unique cycling cap :)
Erotic Discount center sponsored a Dutch Team in the 1990's
used - but in great shape
be the envy of your friends"