Nearly everything I carry in my tool belt could kill, if I had a mind to use my tools that way. My work truck is a veritable arsenal of killing weapons.
I used to be a carpenter so I know what you mean. Hammers, rigging axe, various pry bars, crow bar, sledge hammer, mattock handle, utility knives... enough to arm a platoon and no cop in the world would ever think twice about you possessing it. :-)