My car has something I've only occasionally seen elsewhere: my father had a lock put on the bonnets, mid-way between the fore and aft bonnet catches, on each side. On the '85 4/4 4 seater, the bulkhead makes a shelf on the passenger side, and a little bit of space behind the battery on the driver's side depending on what's in the tool tray. He and my mum used to lock small valuables in here to secure them for the day, but it's v important to remember to remove them before driving off! For this purpose mum tied a piece of ribbon to one of the steering wheel spokes whenever anything was locked under the bonnet... a rather tatty and elderly strand of just such a ribbon was shoved in a corner of the glovebox when I became the guardian of the car.
I'm guessing with the amount of extra electronic gubbins that a 2007 car has in the engine compartment, this is probably no longer a practical solution.
