I have been having fun lately with my Filofax planner. Filofax is pretty utilitarian in the style of their planner pages, but with a little embellishment, you can really raise the cuteness factor. I have seen some YouTube videos where people (usually young women under 30) go crazy with stickers and stamping and all sorts of other decorations--almost totally filling up their pages so there isn't any space left to write appointments! I love the concept of embellishing a calendar, but not to excess.
I have even scaled it back a bit from my first efforts. What you need to get started is a product called Washi tape, which I am now certifiably addicted to. The tape is repositionable, like blue painters tape, but comes in dear little rolls in every color and pattern imaginable. You would not believe the choices offered online and in scrapbooking shops. Add in a few cute stickers, and something called "journaling cards" (also available at Michaels and other craft shops that carry papergoods) and you are ready to go to town. A trip to Michaels got me started, but then I went online and went a bit nuts ordering more Washi tape.
My family thinks I have lost my mind, but I tell you, I am smiling.