In our various discussions of improvised weapons no one has mentioned the common thermos.
The Aladdin Stanley one quart thermos that I carry would apparently make one hell of a weapon. For those of you not familiar, the Stanley is a stainless steel cylinder with a handle fastened to the body of the thermos by steel links.
The thermos can be swung in long bridge motions (such as the Choy Lay Fut type blow that UFC contender Keith Hackney used to KO the sumotori). Obviously, if it is full of beverage it will hit harder.
It can be used to ward off a weapon attack much the same as a tonfa. Similarly, the handle (which is essentially a hand guard) can be used to twist when in contact with another weapon much as a jutte would.
The cylinder can be used as a prod or tool of thrusting and even reinforced with the rear hand in back of the body of the thermos. When holding the handle, the body of the thermos could be used as a very large tekko or brass knuckles.
In close, it can be gripped in a variety of ways including abandoning the hand guard mode afforded by the handle and holding it on both ends to perform upward or downward strikes against things that stick out like the nose or chin.
The thermos could conceivably be thrown. I'd rather throw my thermos at someone than my keys. The only thing that I'd be giving up is knowledge of what kind of coffee I like vs. entre to my front door.
What could be more unobtrusive and non-threatening than a thermos? Now to find a cone shaped cup to replace the standard issue.
Oh, if the guy is just too much you can always offer him a hot cup of joe.
Beware of brute force.
DavidUechi Ryu West