One weapon, that has killed people instantly, but not used as a weapon, just as a joke is compressed air from a blow gun.
In hand to hand, a steel post can impail, pitchfork is nasty.
A tree branch held back until a pursuer is in range.
Running in the dark and misleading a pursuer in to some thing that would impail them, if you know the area very well.
Aerosol can and a cigarette lighter, gas nozzle and lighter.
Can of ether might knock out someone. Chloroform?
I hope this is for last ditch self defense!!!
this is the only forum i would write these types of things on.
i hope this helps.