I don’t buy furniture from thrift stores, but I recognized an IKEA bedroom piece that I thought might be worth picking up. The piece had hung together, and it was at least ten years old (I doubt you can still get one today because it was constructed of actual boards as opposed to particle board material).
But the Invisalign insert that was stuck to the inside of the top drawer was a deal breaker for me.
I can put up with a lot, but this is a bridge too far (is there a pun here?).
While I am pleased someone made a donation, and that they parted with an otherwise serviceable piece of IKEA furniture, it should come down to a matter of human decency to properly dispose of something like this. A responsible person does not leave their disposable dental inserts all over the goddamned place.