This is more a "Musk email fraud" than "oops mom I bought the wrong company and made 1000% in a day" thing, but my favorite was the Long Iced Tea Company, a small company that made bottled drinks, that announced they were changing their name to the Long Island Iced Tea Blockchain Company to "do preliminary investigations into blockchain investments", which spiked them up 400% in an hour
Then there's the pot company, TLRY, which went to $30 billion on $25 million a quarter in revenue, then lost 97% of its value. That's 1/6th of Tesla' current valuation for something that's close to worthless and went -97%. $30 billion alone got dumped into fraud coin ICOs. So the dumb ponzi money is truly out there.
We really are in crazy times, and Musk has built his own cult of tech nerd crazies with the help of the fake news media. Half of these guys would take a bullet for him, believing they're saving the world.