Some years ago, when I was still desperately worried that my hairline might recede, I did find some surgeons who do transplant pubic hair as well as beard and other body hair. I didn't keep my notes, and the situation's probably changed since then.
The site rules don't allow me to post links as of yet, but googling "LIST OF SURGEONS WHO OFFER BODY HAIR TO HEAD HAIR TRANSPLANTS" should give you a not too ancient list of doctors who apparently do offer body hair transplants (BHT.) A quick look gives the impression that some are more aggressive/daring than others.
And yes, adding hairs to the eyelashes appears to be possible as well. As I recall, they grow longer so if you want them to match you have to cut them...
Perhaps/hopefully someone else has more precise or up to date information.