Yesterday, a metamorphic button from the 1920s was featured with Christen’s McSweeney’s interview.  Here’s another button from the same era that flappers actually wore!  She writes,

After WW1, young women enjoyed new freedoms. They could work, cut their hair and their skirts short, booze it up, dance, use birth control, drive a car.

They often wore flirty buttons attached to their garters.

Pretty cute, eh?  Go ahead and search “flapper buttons” and you’ll see a variety of satin-covered badges.