The Tiger elective adventure is Family Stories, and the Webelos/AOL elective is Project Family.
While it's pretty simple to draw your own family tree, consider using a template. I found a very helpful website that has free printable family tree templates. Family Tree Templates has over 60 versions available to download free. For a nominal $4, you can even customize the family tree.
The templates will make it easy for our boys to work on this elective at a den meeting. They can also take it home and complete it with their parents.
I also like this fun kids' family tree template! What's your favorite?
Yours in Scouting,
P.S. Check out these other helpful family tree resources through my affiliate links!