tinsel

A silk or wool fabric with gold or silver thread woven into it; brocade.

A very thin, gauzelike cloth with gold or silver (or, later, copper) thread woven into it, or overlaid with thin metal plates.

A thin, shiny foil for ornamental purposes which is of a material made of metal or resembling metal; especially, narrow glittering strips of such a material, often strung on to thread, and traditionally at Christmastime draped on Christmas trees, hung from balustrades or ceilings, or wrapped around objects as a decoration.

(figuratively) Anything shining and gaudy; especially something superficially shiny and showy, or having a false lustre, and more pretty than valuable.