Despite the fast-moving pace of technology, there is one thing that's fairly uncommon, and that is a USB-powered speaker.
It's something that just simply isn't seen very often, and for fairly obvious reasons. Now, why am I pointing this out? Well, if you happen to encounter what looks like a normal computer speaker and there's a USB cord coming out the back of it, you should probably be a little suspicious about the speaker's true intentions.
This ordinary-looking speaker was found by Redditor mikezilllaaa outside of his office. Looks normal, right? But pay attention to that USB cord.