if you consider yourself a creative and don't keep a notebook i highly encourage you to. I use a moleskine blank paged notebook to hold my ideas, doodle, and deepest secrets. here's a peak inside my brain.
got a journal you don't know what to fill with? here's some of my favorite ideas:
-carry one color of pen with you the entire day (not blue or black), see how the change influences your creativity
-write about yourself in a parallel universe existing in the same timeline as now, what are you doing?
-think about the times in your life that you felt the most intense emotion, manifest those feelings as drawing (scribbles count)
-write the same word over and over again until it loses meaning
-draw household objects as other objects (a door in the shape of a toaster, etc)
just write or draw anything that makes you feel, it doesn't have to pretty, just get it out of your system
drop your favorite notebook ideas below xx