Saving money for a rainy day, keeping it away from the husband (egg money) or away from the wife (drink money)

Keeping it away from the kids, mother-in-law, weird uncle harold, etc. People didn't spend, spend, spend, like they do today, they saved, because there was no 'social security' or other government programs and to take charity was an embarrassment.
I know from personal experience, a relative of my wife who was a farmer died, when the family was going though things with the widow to get the property ready for sale, they started finding all sorts of small caches. Some in his sock drawer, some in a coffee can in a box in the barn, Hundreds of dollars at a time, maybe 15 different locations! They even found another farm that the widow didn't know that they owned! when going through the tax papers. The farms sold, and I am sure that they didn't find it all, just too bad I live so far away and couldn't search and detect before they sold it.
From my experience, one of the reason so many caches are left behind, is that a person who will hide money or items of value, does not necessarily only hid ONE cache. My wifes relative died after a short illness in his 90's, he had a lot of years to hid stuff, there were many who lived when he lived and didn't live so long, but also likly hid stuff. so there is a lot of stuff out there.