Without the playing with fantasy
no creative work has ever yet come to birth.
The debt we owe to the play of imagination
is incalculable.

The creation of something new is not
accomplished by the intellect but by the play instinct
acting from inner necessity.  
The creative mind plays
with the objects it loves.
Carl Jung

I love these two quotes.  One of the most famous minds in Psychiatry recognized that in order to create, we must be willing to play.  I think play is important to creativity and innovation.  So get out there and have some fun, you never know when you’ll need to invent something!