Probably foster care. I really love kids, and have a lot of experience with Attachment Disorders. Also I may do some volunteer or for pay work with teenage runaways, teenage mothers, gay teens, etc. Maybe some work with March of Dimes or a free clinic in the US or outside the US.
I think I would also love my job a lot more if I was way part-time. I am a labor and delivery nurse and I specialize in high risk antenatal and postpartum, pregnant teens, mothers with a fetal or neonatal death. And even though I really, really want to retire and get away from that job, I also feel a calling to it.
I would do more crafts, DIY projects. Yoga, gardening, jewelry making. I am sure I will take classes. Especially travel and classes. But I don't plan to make any money from these things. I might do financial planning for money, though.