Change machines....

[Admiral]

Mrs Fred assures me that she gets little clear plastic trays from the bank and or post office, she can't remember what they are called but they come in different denominations. She fills them up and takes them to the bank where you can put them into your account, and withdraw the cash from the hole in the wall.

On occasion they have given her notes, but usually they want it paid into your account.

Another option could be asking at the Laundromat on the other side of the road to Leclerc if she wants some change, it's called "Blanchiment d'argent"  

I know of a system Credit Agricole use which consists of different coloured plastic bags, I think it's the green banded ones, that can be filled with loose change and then "posted" into the paying-in machine.

Seems an awful lot of phaff.

By the way your name for the laundromat opposite LeClerc is brilliant.  Not.