Thank you, we cannot remind each other enough. Stay safe.
I make it a personal habit to clear the firearm each and every time I pick it up, no matter how long it's been out of my hand.
I also clear it and leave the slide locked back when I hand it to someone. If we're at the range, the slide is locked back and I lay the magazine on the table for the other shooter to pick up.
I'm glad your friend only lost a video player and not a family member.