My daily planner has space to menu plan, it already lists 8 glasses of water so I can just cross them off or color them in, there's a box for top 3 priorities, and a blank box that I use to record my workout.
When I see people buying stickers to track hydration, menu plan, and keep track of their priorities, I'm like why did you ever buy that planner?
Then there are the people who buy a ton of stickers to decorate the boxes on their weekly planners. Now I will grant that my planner isn't covered in decor, but that works for me because I add stickers to make me happy. Here is Moana, a gym bag, and a sticker showing I voted. (Sorry that it's from last December. I'm feeling too lazy to get up and get my phone to take a picture of my current planner.)
My other planner thought came when I discovered an author planner I'd bought for 2018 and never used. I believe I opened it when it arrived, paged through it, and put it aside with the intention to use it later. Of course, I didn't.
I've made stickers with the dates on them so I could use it for 2019 if I wanted to. I'm debating right now if it's worth the effort or not. The planner is also bound like a paperback book, which doesn't make it super usable. I'm also debating pulling it out of the binding and punching holes. The thing that stops me is destroying a book. I mean, I know it's not really a book book, but it looks and feels like one and tearing it apart makes me cringe. I don't even crack the spines when I read paperbacks.
It might be 2020 before I decide what to do with the old planner. :-)
