I forget where I heard the idea from, but I remember someone coming up with a similar idea, just way more sinister. Basically you get a bunch of these really cheap, battery operated speakers like they mention in the comic, but you put sounds on them like creepy children laughing or ghostly noises that are juuuuust loud enough to hear. Set them to have very long timers at random intervals, and scatter them inside someone’s air vents

TEDtoks

At my first job I worked at a local grocery store as a cashier. Normally the store owner would have a playlist of modern pop that would loop at least once per 8hr shift, and he’d change up the playlist every few months. This sucked a lot, but at the time I didn’t know how much worse it would get.

On the closing shift on Halloween night, he started playing his Christmas CD. It was 80 minutes long. On repeat. Nonstop. Until halfway into January. To this day I refuse to listen to any Christmas music at all because fuck that.