Having had a small music store years ago plus having a musician in the house, I’m used to seeing all kinds of musical equipment and accessories.  Guitars, amps, music books, and audio accessories are standard with a lot of musicians.  Audio products are popular with them so they can get the sound they’re trying to attain.  Some may use equipment such as maudio.  Do you have a musician in your house?  If so, then you’ve probably seen some of these things in your house, too.