Markets in everything via MR: The office kid. It's an idea sprung by office workers thinking they were getting screwed into more work by people with kids (who were always having to leave for kid-related problems). The idea was to have a fake kid so you could get your share of paid time out of the office.
I have a better idea. Instead of cooking up a scam, organize the market so the single workers get paid to "take their turn" getting "time off" for dealing with their coworkers' kid-related problems.