Probably should ban all silverware. You know forks and spoons can be melted into sharper points.
And maybe ban plastic silverware too.
Always carry my razor sharp Krenshaw for a steak knife. Even in London. That is a justified use.
Fire also hardens a hardwood shovel handle quite well.
Also, Home Depot and Lowe's are full of potential knives, spears, etc.
Any sporting goods stores are a treasure trove of baseball bats, cricket bats, golf clubs, tent poles, etc.
Boot laces and the leather boot tongue make a decent sling. Surgical tubing, ball bearings & golf balls would do a lot of damage.
The list is endless!
Don’t they still make ice picks? That would be my next weapon of choice.