Non Permissive Environmental Tool; Water Bottle

In places where the carry of anything construed as a weapon for your GOD given right to self defence, is becoming ever more prohibited for the good citizen that wishes to stay within the confines of the said laws, here is an option that could prove itself as a force multiplier if to hand with no other option available! Remember said laws dont apply to the criminal who will carry weapons regardless! Its logical to gain knowledge of whatever tool of opportunity that is not a purpose built weapon by design, looks like and how it can be employed. This is just one of many examples!