Instantiate Different GameObject prefabs?

So I am making this game where you can place a gameobject into the world, through a first person view. I have the instantiate part down and am able to ‘spawn’ my desired prefab. But I want the player to be able to scroll through or select a different prefab to spawn. How would I do that? (Obviously new to this)

Check script reference here (Unity Scripting API site)

Better and more reliable than me writing all here…