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
-highlighters
-sticky notes
-stickers
-dried flowers
-news paper/magazine clips
-paint, color pencils, crayons

aesthetic aesthetic
Anything you like, because it's all for you
book, journal, and flowers image