Lifebooks

Hi - My brother in-law & his wife are waiting to adopt, and they have talked to me about starting a Life book. I got very excited because I love to scrapbook and I told them that I'd love to help them and they can use any of my supplies. Well, this was about 6 months ago, and I really thought that I'd be a Aunt by now and busy helping give ideas & advice on the lifebook. Unfortunately, it hasn't worked out that way. They have had to go back and re-do their bio and nothing more has been mentioned about the lifebook. Now that the holidays are rolling around, I was thinking about purchasing scrapbooking supplies as their gift. Is this appropriate? I've read that starting the Lifebook now, while in the expecting period, can be helpful to the expecting parents, as well as for the child, once he/she gets here! But, I don't want to step over the lines, especially at the holidays.