That's what writing and recording your personal or family history is all about. It doesn't need to be a fancy book, or a dissertation-length story. My daughter just did a 10-page biography project for school on her Grandma - and even the short collection of memoirs she collected for the project will be treasured forever. The point is to start interviewing your relatives. Start writing. If you already have a number of family stories, then pull them together and figure out the best/easiest way to share them with your relatives.
To get you started:
10 Steps to Writing Your Family History
10 Tips for Great Interview Stories
50 Questions to Ask Your Relatives
Getting Your Family History Ready for Publication
Print on Demand Family Histories
Scrapbook Your Family History
Writing Your Personal Family History
Writing Your Family History One Letter at a Time
Make a Memory Book
Blogging Your Family History
Begin a Family Newsletter


I’ve started recording my life and getting my relatives to do theirs too using an online provider called yournutshell.com. They have a facility called your life in a nutshell which allows you to write stories, upload photos, video and audio – they’ve even got lots of prompt questions to get you thinking. It’s great because I can also share it with family by invite so it’s secure and not in the public domain.