Helping corporates get that loose & happy feeling

This morning my coffee mates and I discussed how to implement creative thinking in a classically stiff corporate environment.  I was mentioning an article I read about Danes loving their work multiples more than Americans, which appeared to be about the very flat hierarchies in most Danish workplaces.  So - my coffee mates whom had been part of creative workshops in the past chimed in on how you should see people stiffen when asked to be "playful" or "silly" in front of their boss.  
Im thinking maybe it requires literally stepping out of office mind and into the absurd.  How about a kit with smocks for the entire group?  OR - my personal fave - those lovely lightweight hazmat suits?!  All suggestions welcome.  I think I might put together a kit.....

OK not with the hoods and gloves!