Here's a suggestion. Sit down with your parents (or older relatives/friends) and record a video while you ask them questions about their past. Make a list to cover childhood, family tree, early jobs and travel, etc. You'll never regret it when they're gone. I've done it about 4 times and wish I would have done more.
My dad did exactly this with his dad in the mid 90's, about a year before my dad's dad passed...
I got the video tapes, digitized 'em and put 'em on Youtube so all the family can see 'em.... Around 3 hours of family history...
If anyone's bored and wanna learn more of my family history than my kids are (Currently at least) interested in learning...
https://www.youtube.com/watch?v=6m6dilpUTfQ