According to a recent Cosmo article, everyone loves K and everyone who loves it, buys embarrassing merch to prove how much they love it.
Yes, that is a phone case with K's molecular structure
Unfortunately, there are some people like this who exist. You're at a house party, the music is blaring, everyone's having a great time. Then someone walks in wearing a Ket themed T-shirt, carrying a horse-head mask. They'll probably call it Special K or anything other than what it's actually called. They are the worst.
But for their benefit, we've tracked down some of the absolute worst ket themed merch available on the internet, that people are actually buying:
A laptop protector case to remind everyone in your seminar, what you looked like last night
This T-shirt of the molecular composition of Ket, to help you cheat in your next Chemistry exam