It is called the Family Christmas Book. It has a beautiful red and green cover with a two-page spread to record each year's location, memories, guests and a photo of the occasion. At the end there is a spot to include your Christmas card. It has been fun to see the children's handwriting change as they mature. The third thing I do to help preserve my memories is to take plenty of pictures.
Pictures are a great way to document an event.
Once you have a number of pictures, it will be easier for you and your family to relive your memories if you put them into an album of some type. I label mine directly on the picture with a fine-line silver paint pen. This allows guest to casually flip through your photo album without needing a guided tour. Keep the photo albums out where you, your family, and friends can easily enjoy them. In making homemade memories I suggest you treat your family like company.