As a hit band Twenty One Pilots has the best merchandise of all time. This shop is where you can find everything about them including twenty one pilots costumes for guys and girls, twenty one pilots posters, twenty one pilots t-shirts, twenty one pilots stickers, and more. What is a Twenty One Pilots pin, and what does it do? The pins are created by Twenty One Pilots Shop, and according to the site, “Twenty One Pilots Pins are patches that bring back memories of seeing the group for the first time.”