Somehow the text I wrote disappeared when I posted this photo.
So here it is again.
This is from the late '30's or early '40's. Note how the military look is achieved by the white plastic spoons.
I'm not able to identify most of the instruments but I do see an angel food cake pan and a push-type carpet sweeper.
I'm pretty sure these ladies enjoyed this but in this particular shot they do not look very happy.