I needed to do some picking up in another room, so I put LO down on a blanket on the floor, with her head pointed towards the tv and her face away from it. While I was cleaning, she managed to rotate her body a full 180 degrees, so that she was facing the tv. Not bad for a 4 month old!

At this point, I'm figure she earned a little screen time, plus she was entertained by moving herself, and got some exercise.