Perhaps it is merely a comment about how wonderful the dinner was, how much fun the snowball fights were back in the 1940's, or what the baby did this year. Make a big deal about how much fun it is to record and share memories, and make sure you set an example by recording your own impressions. Be certain you include the menu from any festive meal. Have everyone sign the book. Voice, Photo and Video Photographic and videographic records are very important, if you can capture them.
Digital cameras offer another new way of capturing and preserving images.
Don't forget the importance of capturing the sound of people's voices. Small, handheld audio-tape recorders are cheap. All of these are part of capturing your family traditions. You must certainly remember some special dish made by your mother or another relative. Aromas and tastes can invoke vivid memories.