About 8 years ago I bought 20 of those black and white composition books at Walmart's "Back to School" clearance sale for 15 cents each. At the time I had no idea what I was going to do with them, so most of them sat unused for a couple of years. Then one year I decided I needed a Christmas organizer but I didn't want to buy one and had a eureka moment. I had several sheets of scrapbook paper that I was doing nothing with, glue tape, duct tape, and leftover ribbon so I began a little craft project that has lasted through 6 Christmases.
Inside I suppose I could have made tabs but I didn't care to go to that much trouble so I just have strips of card stock that serve as tabs but are more like very short bookmarks. It has 5 sections: decorations, gifts, card list, events, and foods (includes needed seasonal food prep items, as well as a master plan for baking, treats, and party meal menus along with tablescapes and linens) I save only the pages from the past year so I don't duplicate presents, decorating schemes, menus, etc. This cut and paste planner saves me a lot of time and energy, is easy to carry, and I am never at the mercy of power or an internet connection to make any additions to my plan.
I fully understand how nerdy this makes me, but I have known I was a nerd most of my life so I might as well live my life in the open and share my nerdiness with the entire world.
The other book is covered in suitcase card stock and is our travel book. I keep all our airline, hotel, AAA, car rental, etc numbers listed as well as trip itinerary, flight times, numbers, reservation confirmation numbers, restaurant numbers and any other incidentals I might need when trip planning.
Now if you will excuse me, I am going to begin my gift list for this year. I have about 20 presents that I need to list and possibly even wrap. Like I said__major nerd!