What 1970s fad featured a smiley face as a widely recognized symbol?

What 2000s fashion fad involved wearing rubber wristbands in various colors for different causes?

What 2014 viral challenge involved dumping a bucket of ice water over one's head for charity?

What 2000s fad involved wearing colored silicone wristbands called 'jelly bracelets'?

What exercise fad of the 1980s was popularized by actress Jane Fonda?

What 1990s shoe fad featured platform soles that could be several inches thick?

What bouncing toy on a stick was a popular fad in the 1960s and 1970s?