Well I have completed a portion of this idea. I am remodeling a part of my house built in 1931 by Grandfather. The area I am changing is over an old stairway with fairly large(3' x 3' ) area that you would not know that it was there until you removed the covering that I am putting on it. I had a bunch of old shooting trophies that were in this area & I am just covering them up and I am going to add some coins and a map of where to recover a bag of wheat cents. I am a coin collector so I will make it a good treasure for someone to find. Would love to be aqround when it is found, maybe a 100 years---I don't think so lol lol This is sort of fun---almost as good as finding one----ha ha