Not an idea for the list itself but I recommend Evernote for this...I was having trouble remembering whether I had actaully done things or just thought about doing them during my first break...job related stuff that didn't actually have a clear physical manifestation ie did I add some small volume of liquid to a much bigger volume of liquid. I either took paper notes as I did things or put it I to my phone/computer/tablet because Evernote links everything. Very handy to have a smartphone for this or if not then a little notebook.