When George Naddaff wanted to breathe some life into his six UFood Grill locations in Boston, he sent employees onto the sidewalk dressed as french fries and yogurt. Silly? Definitely. But timely, too. "You create something where people are laughing. People don't laugh today. They're walking around worrying about their 401(k)s," Naddaff says. A little laughter boosted sales by about 8%, and it's just one of Inc. magazine's 23 ideas for getting your business through the tough times.