Yeah, been there.
I forgot to lock my Blazer about 5 years ago when I got home from work. I noticed my dog barking in the middle of the night, but just yelled at him to shut up, lol. Woke up the next morning to go to work and noticed that my bluetooth head piece, my change, and 3 cd's were missing. The novice kids, which you will agree with in a minute, left my W-2's, brand new Piaa fog lights, headunit, amp, and sub all in there untouched. I've never been more thankful in my life, and from that point on have checked the vehicles every time my dog barks at night now, lol.