I recently had our first baby. I created a self hosted web app for tracking diapers, food, etc. Through the delirium of the first month, it’s been so helpful with recalling when and what we did last and staying in communication with my partner without always being awake at the same time. I know there’s other apps out there but I wanted to keep my baby’s health data private. And it’s fun to create a bespoke app tailored to my family’s needs.