I had a cat a few years back… one of the sweetest orange ones. I haven’t seen or been around him in about 3 years now. I went to the puppy store the other day to just look and found the saddest-eyed basset hound(?) (short/big ears/eyes) I wanted to take her home sooooo bad. When I got home, I sat down at my laptop and I noticed a whiteish hair on the touchpad. I picked it up, thinking “oh my god, my hair is going this grey???”, but then saw that it was one of my cat’s hairs. I yelled out “my kitty!!!” Obviously, he had come to “visit”. The hair could have been in the keyboard of the laptop, but it decided to show up then-and move to the touchpad that I use constantly. I believe it was him saying hello.