Just ran across a custom of which I was unaware, credit card "Russian Roulette." You play by going out to dinner with other competent adults. Instead of fighting over who pays (or, in some circles, who doesn't) or going "Dutch," you all throw your cards into a pile from which the server randomly draws the "winner." This was apparently all the range in Los Angeles in the late 1950s. If the party is large or the bill too big, this practice could be modified into bill and tip, two (or more) equal bills, etc. but I suggest working the details out beforehand.
And no, I do not know if there are any tax implications! ;-)
Black, Buy Now, Pay Later (New York: William
Morrow and Company, 1961), 11.