public class SpawnObjects : MonoBehaviour
{
public GameObject[] RandomObjects;

public void spawnSomeObjects()
{
    GameObject Gobj = Instantiate(RandomObjects[0]) as GameObject;
    Gobj.transform.position = new Vector3(0f, 50f, 5f);
}
}

public class BucketMovement : MonoBehaviour {

SpawnObjects SpawnObj;
public float TimeSpawn = 2.0f;
public float AssignTimeSpawn = 2.0f;

void Start()
{
    SpawnObj = GameObject.FindObjectOfType<SpawnObjects>();
}

void Update ()
{
    TimeSpawn -= Time.deltaTime;
    if (TimeSpawn < 0)
    {
        TimeSpawn = AssignTimeSpawn;
        SpawnObj.spawnSomeObjects();
    }
}

public class CollisionToBucket : MonoBehaviour {

    void OnCollisionEnter2D(Collision2D other)
    {
         if(other.gameObject.tag == "Object")
         {
              //tried with isTrigger, no luck at all, objects would collide with
              //them selves and then fall out of the world ignoring the bucket

              //tried also with collider.enabled = false; but unity tells me that I can't
              //access that property
         }
    }

}