Another interesting fad was the Keurig. I doubt anyone in pink sheets trading has any familiarity with what GMCR did...
Also, not to quibble over word choice, but all definitions of 'fad' contain the word 'trivial.' An antonym to 'trivial' would be 'legislatively enforced.' To use it in a sentence:
"Mask wearing became non-trivial the moment it became legislatively enforced."
Good luck to those chasing the next fad. Or, you know, load higher. it'll be okay, I promise.