Not a popular pass time now, I know, but remember the brands of cigarettes?
20 packets of Kensitas cigarettes had an extra "4 for your friends" included, Wild Woodbines, Passing Cloud, Craven A, Black Cats, Player's Weights, Du Maurier, Sobranie Black Russian.
Then after the war, we owed America so much that we had to curb our spending with them, so instead of buying Virginian tobacco, we bought in Turkish tobacco and these brands became available, Player's Grand Turk and Pasha Cigarettes.