The old fashioned nightstick, if you’re lucky to still own one has a leather thong. If you have a perp or emotionally distubed person and you want to contain them in their room, and as long as the door swings away from you, make a slip hitch at the end of the thong, slip it over the door knob and holding the end of the stick and the shorter end over the outer door frame, give enough tension just to keep the door secure until more backup arrives. Emergency service usually ties a clothes line to the knob and stands back, controlling the door and ready with other stun toys.