My friend very recently left her new iPad on a flight at Bodrum, Turkey. I told her she would get it back as the cabin crew would probably find it first when they did their security check after passengers disembark.
No such luck! If it was found by crew or cleaners it is now surfing the net somewhere in Turkey.
I have little sympathy for her being stupid enough to leave it but have no respect for those that would steal a valuable item from customers.
I am pretty sure that it was not picked up by another passenger as she was sat in the front of a small cabin on a 757 and she believed all pax had left that cabin in front of her when she disembarked.