Creativity also requires comfort, Reiman argues. That's why, when he and his staff hosted a brainstorming session for Inter-Continental Hotels and Resorts, they held it on a yacht. "I thought that being on a yacht would increase people's self-esteem -- which would in turn produce a much more creative atmosphere."
Reiman also recommends doing something new every day. "Instead of telling people to grow up, I tell them to grow down," he says. "All kids, when asked to sing or dance, will do it. But when I ask groups of people in their forties and fifties, 'Will anyone get up and dance?' they all dive under the table. If you want to be creative, you've got to be able to dance."