What to fill the carton with?
I have made a few for an event and used candy that was readily available at the supermarket. Chewing gum, fruit gummies, chocolate drops and peanuts are easy to find. Liquorice is also easy to get here in Holland.
However, I couldn't find any cream fonds. The slabs of fudge were also unavailable here and I substituted those with a caramel nougat bar packed in a Milky Way or Mars wrapper.
But maybe you have better luck then me in finding the correct confections and can make it a perfect recreation to impress your fellow re-enactors at an USAAF event.