I play electric guitar, and I'm looking for fun things to mess around with. The way an electric guitar works is it has a magnetic "pickup" wrapped in copper wire which acts as generator, and when the string vibrates, it creates an electrical current. I know IR from my remote will disrupt it and create a distinct sound, and with whatever kind of radiation my compter screen puts out, stray radio frequencies and radiation from neon lights cause annoying background hum. So, is there anything else in my house I could use to dick around and make fun noises with? Pretty much anything that creates a signal that will disrupt a magnetic field.