Yeh, those rattels are really annoying. Originally, most of my rattles came from above the passenger footwell. I think it was the relay box (judging from where the clicking noises of the windscreen wipers and electric windows were coming from) which i managed to fix by wedging a car wash sponge up there. Now my occational ralles come from the dash. A couple of pushes here and there seems the fix the problem until the next pot hole.