These are really interesting, and I love the idea of hiding creepy easter eggs in walls. I’ve never gone the route of urine and needles for my own projects.

We do have one wall in the basement that revealed a functional light socket with a little pull chain when we removed the drywall for a simple repair. A little weird on its own. I replaced the bulb and added half of a doll head before we closed it back up. It will be fun for someone eventually.