Hair clip
A hair clip was an accessory an individual could place in their hair to keep it together.

Lieutenant Jadzia Dax usually wore a hair clip. ( et al.) 

In 2372, she traded her hair clip for passage to the hospital on the Teplan homeworld in the Gamma Quadrant. ()

The Species 8472 replicant impersonating Valerie Archer wore a hair clip. ()

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Clothing accessories