I decided to follow SoCalBeachRunner's lead and install a video interface to my head unit this summer. I attached a backup cam, dash cam, Tire Pressure Monitoring System, and smartphone mirroring capabilities. The video shows me demonstrating the upgrades in conjunction with a previous bluetooth upgrade I did.
I have been meaning to post a rudimentary tutorial on the install for some time now. For now I'll just say that the installation wasn't very difficult. Other than learning that the cheap dashcam I bought for $20 stops recording after the memory card is full, I am very happy with the setup. I'll be asking Santa for a dash cam that is the same size as the one I have installed so that it remains invisible.