My mom carries with her a physical notebook in which one full page is one day. The left side of the spread is for the task list, the right side contains notes/comments. When a task is done it gets crossed over. When the day is over, she manually copies important leftovers to the next day. The other (flip) side of the notebook is for longer running projects, similar approach. Naturally, she has to replace the notebook a few times a year. She says the secret sauce is the tedium of copying the leftovers, that's how she finds the balance between over- and under-planning.