An Unity editor tool shortcut to quickly de-activate the gameObject(s) selected.

SetActiveGameObject.cs

using UnityEngine;
using UnityEditor;
using System.Collections;

public class SetActiveGameObject : Editor
{
	[MenuItem("Tools/On-Off GameObject %g")]
    private static void EnableDisableGameObject()
	{
		// fetch
		GameObject[] _aGO = Selection.gameObjects;
		
		// save undo
		Undo.RecordObjects(_aGO, "de-activate gameObject(s)");
		
		// switch state
		for(int i = 0; i < _aGO.Length; i++) _aGO[i].SetActive(!_aGO[i].activeSelf);
		
    }// EnableDisableGameObject
	
}// SetActiveGameObject