Here’s a quote from Alan Fletcher’s book “The Art of Looking Sideways”: 

 Ivan Chermayeff does much of his thinking in taxies, Lon Dorfsman on planes, Steve Guarnaccia on the subway. Designers also talk of getting ideas when they are on the sleep borderland...”

Challenge: Can you successfully not pick up your smart phone in a taxi, on a plane, on the subway, or in that sweet transition from sleep to wakefulness? Can you do this in the service of idea generation?