My sister was an extra on a movie set. She was just in the stands of a sports stadium or something like that. There were some live extras in the stands, but most 'people' were just mannequins with paper mache faces. As she was leaving, she was either convinced or compulsed to steal one of the paper mache faces and kept it in her room.

I would use the computer in her room when she was out, and seeing a low-poly face at night just staring at me was disturbing and unsettling, so I moved it somewhere else in her room I wouldn't see. She came home later, got scared that the face "moved" without warning, and moved it for me to get scared by it later the next day.

Repeat for a few weeks. After some time, it was obvious we had started to intentionally move the face places just to fuck with each other and scare the other more, even though we never actually talked about or acknowledged this.

One night, I was turning off her computer and I was looking for a place to hide the face. Behind the moniter and in the printer were all pretty good previous choices, but then I thought about her keyboard tray. It closed, so I could hide it on her keyboard. But most likely, she'd open the tray and move her arms in, so she'd feel the mask before seeing it. Creepy, but not my intended effect. In a stroke of genius, I pushed her keyboard all the way to the back of the tray so she'd have to pull the tray out fully, and be forced to see the mask come out with it. I went to sleep laughing.

My sister said she got home late at night, went to turn on her computer, and nearly screamed. Defeated, traumatized, and felt like she was served justice for stealing the face, she finally threw it in the trash. Which scared me one last time in some turnaround of karma lmao