Research. Adding Weapon to Character

I wanted to make the view more interesting for the player, so have decided to model a sword and have a play with making some commands into attacking things with it. Here is a test I created just using Game Object - Cube. Then just attaching the cube to my First person Controller. I did this simply by dragging the Cube onto it. Before I attached the Cube I positioned it to the Camera in where I think the sword should be.