Back in highschool my friend managed to set his family pc’s desktop to an animated gif of a woman getting a facial.
I got the most desperate phone call asking me to come over and help. I showed up and set it to normal about 1 min before his mom came home.
My uncle made one in 1985 that did blinks for clicks and looking direction for joystick control.
https://stars.library.ucf.edu/rtd/4831/