You can't get them because the early descendants of the sons of God dematerialized all of them except the ones which they left for Moses ("Ark of the Covenant" and "Aaron's rod"). The great pharaohs in ancient egypt always had a rod of life, which they used to control weather and other "laws of nature", and that's why kings now have a rod, but it's now only a mere symbol of power.
That's also the reason magicians have a small "magic wand". They no longer know the real "magic", they only do tricks... they imitate that which was once true, as if their wand had any power.
Besides the kings, Gods were usually pictured with the rod of life/God in their hand:
http://www.sacred-texts.com/egy/tut/tut05.htm
The "Ark of the Covenant" was essentially the same thing as the rod, except it was more powerful.
After so many years, both the Ark of the Covenant and the rod have run out of power, so even if you found them you'd have no use of them, because man can no longer control the divine powers that rule the universe. Moses dematerialized his body with the rod, that's why his body will never be found.