What is old is new again. God Bless all of our relatives that have since passed and left us a "surprise" to be found later.
I found $250.00 in 50 dollar bills in my Grandfather's tool box. With a 1955 Zippo lighter, (which still works). under the the wrench template in the second drawer down.
Found my Great Grandmother's engagement ring in a "secret" compartment inside her jewelry box that my mother and sister had for years. (The hinges and inlays were popping out in a couple of spots in the mahogany box, and I heard something rattle when I was shuffling it around. ).
It was their ingenuity, resourcefulness, to think of the "big" picture. I may have a literal "treasure map" to get to my crap when I'm gone,..
Books at yard sales are a great resource to hide, cash, whatever,.....
Just takes patience. (Which Alf, has more than I)
