Barcode wristbands are one of those few things that can be both functional and fun. While they can be used to help you keep track of people at a large event or to grant special permissions like access to a VIP section of a gathering, they also make great souvenirs for the people who receive them.

Ever since the bright yellow Livestrong bracelet became a fashionable way to support cancer research over a decade ago, silicone wristbands have become a popular way for charities to draw attention to various causes.