Don’t know if this is possible already, but something that would be really cool is stationery/template pages that, when you start writing on them, give you a prompt to pick from a certain selection of stickers, or automatically add your location or last photo taken or to open the camera and take a selfie or something.
This would be really cool to do as a share sheet action too, so you take a photo and share it to a new page in your travel journal where it automatically includes your location too, or you take a screenshot/link and share it to your visual to-do list or calendar