Re: One thing for sure....
I know of a couple "flimsies":
1) A telegram or TELEX printout is called a flimsy. Some people called the output of early thermal printers flimsies.
2) One of my Uncles called a fuel can a flimsy (he claimed he learned the term from the Brits in Italy during the last days of WWII ... not sure where this actually came from, he's the only person I ever heard use it).
3) Bingo cards, according to one of my Aunts (wife of the above Uncle).