I had the same rattling with the gear shift as Gambalunga years ago. At first I was really scared because it sounded as if a gear in the transmission was broken...
Other rattling reasons, The extended antenna, the height-adjustable steering wheel in the highest position rattles against the dashboard. That's why I stay a touch below the highest position, the soft top linkage can also rattle quite ugly in some places especially when it's open. The bonnet, of course, also rattles when those little rubbers on the centre bar are missing, but more so when the car is idling. Also the locking hooks of the bonnet if grease is missing. The bad thing is that our sense of hearing in a car is almost always played tricks on.
