Foreign body in soft top well

[oldbadger]

I placed a small tracking unit between the layers of the soft top above the driver's door to see if it would work there. While removing the tracking device, I dislodged it to the rear, and it fell down into the bowels of the car somewhere in the well that receives the soft top when it is moved to the “down” position. I heard it go down the space between the layers of the top to the rear of the cabin on the driver's side.
Does anyone have any suggestions for where to look for the device in the car? I would settle for an easy way to get into that area in question.
I cannot see it from the interior of the cabin. This is not an emergency but I would like the new foreign body out of the car.
Thanks for any help with this relatively minor problem. There is no benefit to telling me how dumb I am, I already figured that out.