Remove Object from Game after Collision with Player (Unity 5.2.3f1)

Hey, I have a game where the player can throw knives. I would like to make it so the knives can be picked up again after they have been thrown. I need the knives to be collidable, not a passthrough trigger.

Any help would be appreciated!

Note: Using First Person Character from 5.x Standard Assets

void OnColliderEnter(Collider other)
{
if(other.gameObject.tag == “Player”)
{ //Pickup knife stuff here}
}