This is the $30 Pluginz Jack Rack key hanger. It looks like a little amp and holds your keys via an audio jack on your keyring. They cost $30 - $35 depending on amp style and come with two keyrings. I just bought one for my roommate because he's big into playing guitar. Plus I'm kicking him out and I figured this would make a great housewarming gift for his new place. You know, just a little something to say, "Please don't use any of the key copies you made to come kill me in the middle of the night."
Keep going for more shots.
Thanks to Lee H, who agrees if there aren't holes punched and kicked in the wall around your key hanger, you're not a real rockstar.