Having always taken an intense interest in Firefly whenever it’s not on their network, Fox has made the rare blunder of upsetting Firefly fans, after putting a stop to the underground industry of “Jayne hats.” The orange-and-yellow knit cap—a mom-made gift to Adam Baldwin’s tough guy character, seen briefly in a single episode that didn't even make it to air—has long been a staple of Browncoat fandom, with many like “Ma Cobb” taking to Etsy, eBay, and their own web storefronts to peddle hand-knit versions, a practice that the show’s stars and creator Joss Whedon have warmly embraced. Unfortunately, just as the Firefly hat started to become popular, Fox had to come along and cancel it: After an officially licensed, mass-produced version began selling on ThinkGeek, many of those independent sellers began receiving cease-and-desist notices, while some were even banned from Etsy altogether. Adding insult to injury, ThinkGeek’s page for the Jayne hat openly admits that its makers—a company called Ripple Creek—“weren’t huge fans” of the show, which in some circles is considered an even greater crime.