It's asking questions
It's telling stories
It's using your gifts
It's thinking differently. Or thinking different (if you want to be different)
It's solving problems
It's doing something productive with your time
It's doing something generous for those around you
It's listening to the small voice in your head saying, "I really should try that someday"
Call it whatever you want, but chances are you're already engaging with creativity in some way. Why not start doing it with some real intention?