Incident at Badyama is my favorite of the standalones, but it takes place in post-war Burma and might feel too fraught at the moment. Thale's Folly is very domestic and lovely, in a quiet way. And I recently read her 1978 memoir A New Kind of Country, about moving to a village in Nova Scotia, and it was startlingly interesting. I also loved Caravan, but it's over a decade since I read it and I don't know how it will hold up to modern sensibilities. Knowing Gilman, probably rather well.