To keep your journal fun and interesting, try making it visually appealing to your taste. You can add whatever you want to it. Literally anything.

Heres a list of some things you can use,
-washi tape
-colored pens
-sticky notes
-dried flowers
-news paper/magazine clips
-paint, color pencils, crayons

art, aesthetic, and drawing image art, journal, and drawing image
Anything you like, because it's all for you
flowers, journal, and yellow image