As an attention-grabbing ploy.
Have a group of people all with flaming red hair for hire. If you have an event and want to get some attention at the event and from the media, hire them to attend. The bigger the group, the more they will stand out.
Convenient and pretty.
Have a small (in diameter) spiral with one and a half “turns” (like a very small and short spring.) Use some pressure to open it up and wrap it around your hair where you would a rubber band.