Actually, just saw a post online where someone's fancy blender got wrecked because their housemate used it to mix paint. The motor seized up from the thickness, and they had to buy a new one. It was one of those expensive professional models too, not just a cheap thing. Makes total sense to set those rules early, save a lot of hassle later.
That blender story about the motor seizing up is so real. I read a post where someone's roommate used a stand mixer for concrete mix and totally killed it. Setting rules early saves so much drama, lol.