The "Barnsley Beer Towel" - a small piece of microfibe cloth in the colours of the football club you can also use to dry your pint glass and mop up any spillages.
As a fellow huge Pittsburgh Steelers fan I’d been thinking of something similar in recent weeks. A “Tarn Towel”. The spinning of the scarves was amazing to see on Saturday & reminded me of a Steelers game. I got my first Terrible Towel at Christmas and the newest Yinzer in Dodworth (my 11 year old niece) is getting one for her birthday tomorrow. I’d definitely buy one
Sheffield Steelers also do this just before Christmas each year. https://sheffieldsteelers.co.uk/steelers-teddy-bear-toss-21st-december-vs-dundee-stars/ I've said it before, for ideas on how to improve the atmosphere and match day experience at Oakwell, Barnsley could learn a lot from the Sheffield Steelers.
What about reviving the hat-mask idea? 15,000 people all in James Norwood hat-masks would properly scare the **** out of the opposition.