I am reminded of my wife's aunt and uncle, Honey and Arthur. They were odd birds. They slept in separate rooms. They had money but lived very frugally.
Back in the early '80s Arthur and Honey were in a car accident. Arthur drove off the road into a ditch and the car ended up on its side. Honey broke her hip and never really did the therapy so she did not get around well. When she did have to move around, she did so with the aid of a walker, very painfully and very loudly. After the accident Arthur had his license revoked and we started doing their weekly grocery shopping.
When Arthur eventually passed, I think it was 1985, Honey asked us to go through his room and his things in order to donate his clothing and some of his furniture to Goodwill.
We found over $58,000 dollars squirreled away in jacket pockets, pants pockets, under the mattress, in drawers. Almost everywhere. When we gave her the stash, I have to say that old Aunt Honey was shocked and more than a little pissed that Arthur had been hiding money from her. I assume she deposited it but I really don't know what happened after we turned it over to her.
When Honey died I told my wife that we should have bought the house. (we didn't) Lord knows what else may have been hidden there.