Have you done anything creative like this with your plumbing?
I added some speakers and wired up a few chips inside the tank. On the outside, normal everyday toilet, but when you flush it, it screams.
Great party joke, people love it. Once a friend genuinely thought my house was haunted though. It took them a few flushes before they asked me about it.
What have you done to your home lately that's unique? Let's hear it.