According to Marion Nestle, a food and public health professor at New York University, people low on cash and with more time on their hands will cook more rather than go out. They may also, Nestle suggests, try their hands at growing and even raising more of their own food, if they have any way of doing so. Among the green lawns of suburbia, kitchen gardens would spring up. And it might go well beyond just growing your own tomatoes: early last month, the English bookstore chain Waterstone's reported a 200 percent increase in the sales of books on keeping chickens.

At the same time, the cheapest option for many is decidedly less rustic: meals like packaged macaroni and cheese and drive-through fast food.

In their place people could rely more on federally-funded health centers, or the growing number of drugstore clinics, like the MinuteClinics in CVS branches, for vaccines, physicals, strep throat tests, and other basic medical care. And as the costs of traditional medicine climbed out reach for families, the appeal of alternative medicine would in all likelihood grow.

Higher education, another big expense, would probably take a hit as well. Students unable to afford private universities would opt for public universities, students unable to afford four-year colleges would opt for community colleges, and students unable to afford community college wouldn't go at all.