Each week I print this weekly to-do list on cardstock and keep with me at all times! First, I type in the things that I do regardless for school each week and save/print it. Then, I add in with a pen the things that come up throughout the day! Hopefully, this helps you as much as it helps me. :)
USER TIP: It helps me visually to put the things that I do after school at the bottom of the page, and the things I need to do before school at the top. Then, I fill in what's left in the middle as things come up throughout the day/week.