The Many Powers of Ribbons

Obviously you can have special ribbon handed down through centuries which must be won in a fighting tournament, and obviously there might be orders of fancy warriors marked by ribbons infused with magic which not only confer powers but allow the wearer to be tracked, but don't forget about collections of nanomachines which resemble ribbons which respond to their owner's thoughts, either because of a neural implant, psychic powers, or technology subtler yet such as monitoring muscle contractions.