we are all creative all the time.
when i was on a conveyor belt line stuffing flyers into magazines, i created......flyer stuffed magazines!! not as funky as many computer programmes maybe, but still vaguely creative, (and quite possibly more useful even!). then there was the slipping of notes into packaged goods that pointed out exactly how much they actually cost to make.
of course more 'skilled' jobs allow for greater freedom of expression within them, but everyone, EVERYONE who labours creates.
i remember when labour were abolishing Clause 4, Tony Benn said he thought it was great, he just wanted to change one little bit - where it said 'to seize for the workers, by hand or by brain...' to '..for the workers, by hand AND by brain...' cos we all always use both. he may be a middle of the road methodist minister, but he's spot on sometimes