A woman wearing Deely Bobbers

The Deely Bopper (sometimes spelled Deeley, also sometimes Deely Bobber) is a pair of glitter balls, plastic "feelers", or other ornament stuck on two long springs attached to the head with a plastic hair-band to make the wearer look like a "wacky" alien. It is sometimes called a head bopper and looks like a hairband with springy things on it.