My sisters' fiesta had the passenger window smashed. They looked in the glovebox and took nothing - fill with junk mind you. I still think that this was the result of leaving the cradle on the window. They also tried to leaver the frame leaving a bulge on the door - like the one posted above. Consequently, when you try and wind the window up makes a horrid rubbing/sqeaking noise.
I am sorry that this happened to you and your father. Need to electrify the car, should give them a nasty shock.
I've been thinking about doing that, but I fear that they are going to just smash the window for the hell of it, coz you sort of foiled them.
Leave glovebox closed - they smash to have a look inside.
Leave it open - the smash the window coz you pee'd them off.
Maybe.