"The #1 seller at the school store in the 90s, Yikes! pencils. (And arguably the most painful writing utensil ever to exist)"
Not just necklaces holograms were on everything Comics, toys, Pogs (another unexplainable thing from then...)
Oddly, I have that actual one - it is 6 small fish, 3 jumping dolphins and one whale with its tail above water. Palm trees on the upper right.