How to instantiate a prefab after its been destroyed

So heres what im trying to do. I want to have a prefab instantiated on a collision, appear for two seconds, then be destoyed. This will get called repeated times. After the first time, i get the error that the gameObject trying to be instantiated has already been Destroyed. I tried making a temporary gameobject to be instantiated and destroyed, but the call to destroy is in a different method (and needs to be since their being called from a seperate script) so i cant reference that temporary gameObject. I know i figured this out before and can be done, but i forget how i did it. heres my code using UnityEngine; using System.Collections;

 public class changeCursor : MonoBehaviour {
     double t;
     float tf;
     public GameObject cursorAnimation;
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
     
     }
 
     public void wait(float x){
         t = Time.time; 
         tf = Time.time + x;
         
         while(t < tf){
             t = t + 0.001; 
         }
         
     }
 
     public void playAnimation(){
         GameObject cursorInstance;
         cursorInstance = (GameObject) Instantiate (cursorAnimation, transform.position, transform.rotation) as GameObject;
     }
 
     public void hideCursor(){
         gameObject.GetComponent<Renderer> ().enabled = false;
     }
     public void goBackNormal(){
         Destroy (cursorInstance);
         gameObject.GetComponent<Renderer> ().enabled = true;
     }
 }