Making a car difficult to steal

1970Duster said
An indentation of where my .45 sits on the dash and a couple of empty shell casting on the dash doesn't hurt/works fine for me so far.

Haha
I have an empty Uzi 9mm box I used to throw up on the dash opened with the empty casing holder showing.
My truck was never messed with when it was parked out in the woods or the desert.