Mine was our CRT TV. I would rapidly push the power button on and off because I thought the picture coming and going looked cool but eventually it fell inside of the TV. I think I later stuck a magnet on the TV.
Not looking for Reddit answers like “My parent’s marriage”
Ahh… to disinfect it or something in a place where the water might not be fully clean?
Yup, that’s what google told me. It removes some of the bad stuff that might be in the water