It's not a bad idea at all, if you've been cleaning windows years and you shut down for say 6 months.
Then why not go and get a job for a few months, even if you don't need the money it's something to do. Have a change, make the most of a bad situation..meet new people, have a laugh etc.
I wouldn't choose a supermarket but being out In the fresh air picking some veg sounds alright lol