Wikipedia

In 2016 a glass bottle found buried in the threshold of a man's house was featured in an episode of Antiques Roadshow filmed in Trelissick, Cornwall; glass specialist Andy McConnell tasted a small amount of the contents theorising it was possibly port or wine though he did note the rusty flavour and the presence of nails, a later episode in 2019 then revealed the contents had been analysed by Loughborough University that identified it actually contained "urine, a tiny bit of alcohol, and one human hair" alongside some brass pins dating from the late 1840s and an ostracod. It was theorised to be a witch bottle.[4][5]

Love it!

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.

Dang, not what I was hoping for