How to Change what the character is holding in the first person template

So I am trying to experiment with a different kind of first person game, in other words one that is not a shooting game. I want to make a game with magic involved. For this I want to replace the gun with some sort of other object such as a wand or staff. I can’t figure out how to get rid of the gun and put something else there without messing up the entire character. I have been searching around but I can’t find anything on it. Anything pointing me in the right direction would be greatly appreciated. Thanks in advance