Oh dear !
This reminds me of years ago.
My sisters boyfriend was saving up for them to get married and had amassed a tidy amount in a shoe box in his bedroom.
It was between four and five thousand pounds.
One afternoon he came home from work to find his elderley father stoking a bonfire burning rubbish.
Yep he had a clear out and under the old pair of slippers he was currently burning in the garden was the shoebox stuffed full of tenners and twenties.
He was totally distraught,angry and tore a strip off his dad.
Totally amazingly the story had a happy ending,he rang his bank sobbing and they said,dig out the shoebox as intact as you can.He did and took it into the bank.
They gave him the money back as apparently they could tell it was burned notes (unless his dad paid the bank the money back and told them to cover his tracks lol)
On a funnier side,i found £40 our road a couple of years back on the way to B and Q.Further on there was more..I stopped the car and got it off the road.
A bit further on i doubled back and found even more,it amounted to nearly £400.
I parked up in a local carpark and walked the route i had drove..
In the middle of my journey i found a ran over wallet with about £40 in and wide open,no address with it BUT a valid B and Q discount car for over 60s,with a bit of detective work i returned all the cash,wallet and discount card to a very happy owner..