What do you have on you at all times, to get you to your car or home where your BOB is? A bag you keep in your work place to help you get to your car or home.
Always either a Glock 23 or Glock 30sf and extra mag and a stash of $250 plus one 1/10th ounce Canadian Gold Maple Leaf. It requires vigilance not to spend it, but in tough scenarios, cash/gold can save your life.
Other than that, 99% of the time a surefire flashlight and a glass breaker pen combo.
If I pad what I am carrying, a compression bandage, something that makes fire and USAF survival straw.