I love my binder. I don't use it for my daily lists, but for all the information/plans i need to have handy. It is great for when I am ordering something online or filling in forms. My binder is 1 1/2 inches with plastic clear pockets on the outside and more pockets inside.
It does have my calendar (monthly, decorated with washi tape), and my brain dump to do lists.
Reference. I keep all our important numbers (banking, ccs, health insurance...) and things like the combiation to locks, printer ink #s. husband's dress shirt size. Most if it I keep in business card sheets so I can change them out when something changes rather than redo an entire page.
Running list of internet passwords, things borrowed and donated.
The school reference papers, class list, room parent duties.
Contact info for both family and provider people. I have a reference sheet on the back of frequent numbers and the rest is inside in the business card holders. I got a box of blank cute cards from Vistaprint to write everything out on.
I also keep the menus for our favourite local restraunts that do pick up here so I can have everyone look at them and choose.
Projects. Everything all in one place. for things like redoing my craftroom. Kids birthday partys go here too.
House. mostly paint chips and to do lists
Holidays. Lots of lists, plans, really worked well this year.
Iggy. I am pregnant and this is where all the handouts from the midwife, the HB supply list etc go.
I make my own printables because I could never find just exactly what I wanted. I just do them in word and have been adding washi tape to cute them up after I print. I get inspiration from CleanMama and ListPlanIt.
I have lots of page protectors, both for loose papers and with cards stock in them and post it flags as dividers.