I used to have several TO DO lists around the house. That really doesn't work. For greater efficiency, combine them all into one and keep it posted on your refrigerator or better yet, in your smart phone. I like having mine in the phone for many reasons--like when I am at CVS and can take a peak on the phone to see if I am running low on a pharmacy item I can pick up then, rather than making a separate trip. It saves time and keeps your TO DO list handy to review when waiting in line somewhere to be sure you are on top of what needs to get done.