I'd say most people would be far less afraid of someone with a wooden weapon than someone with a steel knife, when a wooden weapon would be far more harmful.
A wooden mallet with tapered ends could easily crack a skull or break joints and limbs if used properly and would be easily concealable compared to a high density knife blade.
Considering that a war hammer is still likely the most dangerous weapon to an armored soldier today, there are worlds of weapons that are not routinely used or thought of that could be deadly in the right circumstances.
It doesn't even need tapered ends, as long as it's sturdy.
Heck, a well-trained person's hands can be quite deadly to someone not wearing armor... and if you know what you're doing, armor won't stop you from ripping someone's arm apart and spiking them into the ground with their own weight + that of the armor -- and yours, if you're feeling particularly aggressive :)
A wooden mallet with tapered ends could easily crack a skull or break joints and limbs if used properly and would be easily concealable compared to a high density knife blade.
Considering that a war hammer is still likely the most dangerous weapon to an armored soldier today, there are worlds of weapons that are not routinely used or thought of that could be deadly in the right circumstances.