Phew not sure mate,
First one looks like the old style alarm override.
Second could be the aerial one for the lockable type.
The third, not a digeridoo i'm afraid.
Cheers
Nick
ive got the 3rd one aswell.. never found what its used for, and ive got the 2 peice splined locking nuts so it isnt for them (mabey he changed them but kept the key?)
2nd one is definately for an aerial ...manual one put in the groove in the top to pull it up ....3rd one if off a late car could be for the child locks
(nr the door lock you have to look near the lock to see the keyhole)i know the later 5 series has them