If I'm driving having a small lockbox in the car lets me store my pistol with somewhat more security than just dumping it with my sharps in the glovebox before entering secured buildings. I've also learned to leave extra time to let me park, walk up to the door, realize that the building is marked for "no guns," walk back to my car and put it away before going in.

At other times I've had a collection of items that wouldn't pass muster and no car to stick 'em in. In each case the guard sergeant was very understanding and agreed to hang onto my gear until I came out. I've been thanked repeatedly for coming clean before entering security.