If I could pick it would be doll making.
I oil paint cloth dolls and love everything about it. Because I also love quilts I make doll quilts so get to have the best of both hobbies.
As for selling dolls that is another issue.
I have sold dolls in the past. Simple play dolls or simple dolls for decoration. They were popular then but not so much now.
There will always be a few doll lovers/collectors. I am 65 and still love dolls and doll quilts.
judy j
http://hardincountykeepsakes.blogspot.com/