I'm looking for someone to validate or disprove my opinion. Here is a video of the issue. https://www.dropbox.com/s/fjs8xtu0v9ikuov/IMG_3947.MOV?dl=0
The prior owner was a smoker and used in-vent air freshers. The blower motor was not making this sound until after I had the car for some time. I think I went over a bump one day and it started making noise. https://cdna.4imprint.com/prod/extras/100300/330264/700/1.jpg
My thought is one of these had fallen into the vent and the bump jostled it into the blower motor. Does this sound probable?