The Mood Ring. My mom had one that I'd sneak out of her jewelry box as a kid! I thought this thing was so amazing how it changed color. Can remember putting it on all my fingers to see if I could get a different mood out of different fingers.
All women and girls were REQUIRED to wear these in any public swimming pool. Supposedly to keep hair out of the filter. I had one COVERED in plastic flowers.they did NOT keep your hair dry!) "Rubber Swimming Caps - hated these!