I don't think it's necessary to go into all this trouble. Tablets made of the much, much cheaper clay are still accessible today—4000 years after they were created.
But it wasn't just the act of creating some clay tablets - those particular clay tablets happen to have run the probability gauntlet successfully and came out the other side - just making a clay tablet and putting it in your closet is unlikely to produce the same results. The place you put the tablet is more important than the fact that it's a clay tablet in itself.