Syncronize Items over network

How would I go about instantiating an item on the network that everyone can pick up and add to their inventory? I have a system that works flawlessly in singleplayer but once someone connects it stops working. Also how would one manage to synchronize a object added as a child of a bone so that all can see? Here are my attempts:

This is the inventory script on the player prefab (pardon my messy code):

 using UnityEngine;
 using System.Collections;
 
 public class Inventory : MonoBehaviour {
     bool invOpen=false;
     int x=1,y=1;
     ArrayList itemsInInventory=new ArrayList(100);
     // Use this for initialization
     void Start () {
     
     }
     bool ticked;
     // Update is called once per frame
     void Update () {
         if (Input.GetButton("Inventory"))
             
         {
             if (!ticked)
             {    
                 ticked=true;
                 if (invOpen)
                 {
                     (GetComponent("Esc")as Esc).PauseGame(false);
                     invOpen=false;
                 }
                 else
                 {
                     (GetComponent("Esc")as Esc).PauseGame(true);
                     invOpen=true;
                 }
             }
         }
         else
             ticked=false;
         GameObject[] loot = GameObject.FindGameObjectsWithTag("Loot");
         int i;
         for(i=0;i<loot.Length;i++)
         {
             if(Vector3.Distance(loot[i].transform.position,transform.position)<15&&Input.GetKey(KeyCode.Q))
             {
                 if (networkView.isMine)
                 Add ((loot[i].GetComponent("Item")as Item).pickup());
             }
         }
     }
     void Add(GameObject item)
     {
         if(item!=null)
         itemsInInventory.Add(item);
     }
     void CloseGui()
     {
         
     }
     void OnGUI()
     {
         if (invOpen)
         {
             GUI.Window(1,new Rect(x,y,500,700),InvWindow,"Inventory");
         }
     }
 
     void InvWindow (int id)
     {
         int i,j=0,k=0;
         for(i=1;i-1<itemsInInventory.Count;i++)
         {
             if(GUI.Button(new Rect((x)*(j*100),(y)*(k*100)+15,100,100),(((GameObject)itemsInInventory.ToArray()[i-1]).GetComponent("Item")as Item).ID))
             {
                 if (networkView.isMine)
                 (((GameObject)itemsInInventory.ToArray()[i-1]).GetComponent(typeof(Item))as Item).Equip((GetComponentInChildren(typeof(RightHandMount))as RightHandMount).getTransform(RightHandMount.Mount.RightHand));
                 //((Item)Instantiate((Item)itemsInInventory.ToArray()[i-1])).drop(transform.position);
                 //itemsInInventory.Remove(itemsInInventory.ToArray()[i-1]);
             }
             j++;
             if(j==5)
             {
                 j=0;
                 k++;
             }
             
         }
         
         GUI.DragWindow ();
     }
 }

Then this is my Item script:

 using UnityEngine;
 using System.Collections;
 
 public class Item : MonoBehaviour {
     public enum EquipSlots{
         LeftHand,
         RightHand,
         Head
     }
     public string ID = "";
     public bool IsEquipable = false;
     public EquipSlots Slot = EquipSlots.RightHand;
     
     
     
     
      bool isdrop = true;
     
     
     // Use this for initialization
     void Start () {
         
     }
     public GameObject pickup()
     {
         if(isdrop)
         {
             isdrop=false;
             gameObject.SetActive(false);
             return gameObject;
         }
         else return null;
     }
     public void drop(Vector3 position)
     {
         isdrop=true;
         transform.position=position;
         gameObject.SetActive(true);
     }
     public GameObject Equip(Transform parent)
     {
         transform.parent=parent;
         transform.localPosition=Vector3.zero;
         gameObject.SetActive(true);
         print ("sldkf");
         return this.gameObject;
     }
     
     void OnMouseEnter()
     {
         GameObject[] players = GameObject.FindGameObjectsWithTag("Player");
         int i;
         for(i=0;i<players.Length;i++)
         {
             if(Vector3.Distance(players[i].transform.position,transform.position)<7)
             {
                 highlight(true);
             }
             else
                 highlight(false);
         }
     }
     void OnMouseExit()
     {
         highlight(false);
     }
     void OnMouseDown()
     {
         
     }
     void highlight(bool highlight)
     {
         
     }
     // Update is called once per frame
     void Update () {
         
         
     }
 }

The highlight will be implemented later, and the mounts will not be individual scripts. Any help would be much appreciated.