...seriously, you guys? Come on. What you're seeing isn't anything more than your minds running away from you.
Think about it this way. Your mind feeds you info. It also interprets it /for/ you, like a translator program. And occasionally it fraks up, like when you try to betaread your own work and miss a typo or two. Because you knew what you meant, your mind doesn't show you the mistake unless you override this by looking really closely, and being careful. It's the same reason stuff like the Bloody Mary ritual works: if given enough wiggle room, your mind can interpret sensory information into the most terrifying thing you can imagine.
So what happened here is no different: your imaginations have run away from you. Here you all are, posting about ordinary things that your minds have twisted into a big web of conspiring bad spirits. The only outstanding thing is the Notepad document. How do we know Shibosho isn't just doing this for shits and giggles-- I mean, we're all trolls here sometimes. No problems with admitting it. It really ramped up the drama, ne?
Also, a note on the smoke detector: They come with a power sensor that tells them when the battery is low/dead. When this happens, they begin to beep. Slowly. It's not hard for a human being to interpret a slow rhythm into a more complex beat, not at all. Try it with something like a grandfather clock when you have a song stuck in your head.
Honestly, the whole lot of you... no wonder our armed forces are screwy...