2. A Title Belt
This one is typically the weapon of choice for WWE, mostly because it's so easy, and not too violent in nature.
Yet, slamming a championship belt into a guy's head still has a lot of impact, and always gets a pop from the crowd, as they know that they have probably just witnessed the final blow of the match.
A wrestler that I worked with in a promotion once used the singles championship that he possessed to hit his opponent behind the ref's back. He had worked on the belt himself, attaching the medals and doing detail work to update the look of the title.
When it made contact with the other guy's forehead that night, the belt completely flew apart, with the various different pieces going in all different directions into the crowd.
The impact was huge, and the fans popped accordingly. The belt may have been ruined, but to see the crowd reaction made the moment all the more worth it.
Now if only that would happen to that God-awful WWE Title belt.