RE: What's the strangest thing you have seen in someone else’s home?

I used to be a travelling furnace technician and duct work cleaner. I entered thousands of homes.

I found a jar of weed under a heat register near a dudes desk in his office.
I entered the homes of hoarders.
I saw a drawing made by a child in an old man's bedroom. It said "Grandpa" and it was a picture of a human laying on his back while a smaller human was on top with it's head near the crotch region. Both were drawn naked. I just assume the kid was a shitty artist and has no idea what he really drew. I hope it was that.