how to recollect the power object after it generate the power for few seconds

my pick up script:

var CoconutCount : int = 0;
private var speed = 20;
private var moveDirection = Vector3.zero;

function Update(){
    if(CoconutCount >= 4){

        controller = GetComponent(CharacterController);
        transform.eulerAngles.y += Input.GetAxis("Horizontal") ;

        moveDirection = Vector3(0,0, Input.GetAxis("Vertical"));
        moveDirection = transform.TransformDirection(moveDirection);
        moveDirection *= speed;
        controller.Move(moveDirection * Time.deltaTime);

    }
}

function OnTriggerEnter(collisionInfo : Collider){
    if(collisionInfo.gameObject.tag == "Coconut"){
        CoconutCount++;
        //audio.PlayOneShot(batteryCollect);
        Destroy(collisionInfo.gameObject);
    }
}

my collect script:

var GUICoconut : GameObject;
var CoconutCount : int;

var Coconut1tex : Texture2D;
var Coconut2tex : Texture2D;
var Coconut3tex : Texture2D;
var Coconut4tex : Texture2D;
var Coconut0tex : Texture2D;

function Start(){
    //GUICoconut = GameObject.FindWithTag("CoconutGUI");
    GUICoconut.guiTexture.texture = Coconut0tex;
}

function Update(){
    CoconutCount = this.GetComponent("PickUp").CoconutCount;
    if (CoconutCount == 1) {
        GUICoconut.guiTexture.texture = Coconut1tex;
    }
    else if (CoconutCount == 2) {
        GUICoconut.guiTexture.texture = Coconut2tex;
    }
    else if (CoconutCount == 3) {
        GUICoconut.guiTexture.texture = Coconut3tex;
    }
    else if (CoconutCount >= 4) {
        GUICoconut.guiTexture.texture = Coconut4tex;
    }
}

Instead of using destroy use renderer.enabled = false to hide it and then after a few seconds re-enable it.

e.g.

function OnTriggerEnter(collisionInfo : Collider){
    if(collisionInfo.gameObject.tag == "Coconut" && collisionInfo.gameObject.renderer.enabled){
        CoconutCount++;
        //audio.PlayOneShot(batteryCollect);
        collisionInfo.gameObject.SendMessage("RendererOff");
    }
}

On the item do this to turn it back on:

var offTime : float;

function Update(){
   if(!renderer.enabled && Time.time-offTime > 10){
      renderer.enabled = true;
   }
}

function RendererOff(){
   renderer.enabled = false;
   offTime = Time.time;
}