Cereal shiller
Did you ever enter a contest as a kid? Long ago, many brands aimed at kids used national write-in contests to promote their products. All you needed was a boxtop or two. Plus an envelope and a stamp. A first-class stamp cost three cents back in 1940. Sometimes it was just a matter of mailing in a coupon and then watching your mailbox for a free comic book (or, if you remember Ralphie from A Christmas Story, a secret decoder…