We've been naming girls for so long we've been a bit stumped since we found out that we are expecting a baby boy. We like more unusual but not totally out there names. Already suggested to DH which he doesn't like are Quinn & Grayson.
You could go with names that are popular but not current baby names like Mark, Stephen, Michael, Alan, Philip, Simon etc. Or biblical which is a current trend but pick one that isn't in the current or recent top 100s (not Noah, Gabriel, Reuben, Daniel, Ezra, Luke etc). You could pick a local name like a saint's name (e.g. Mungo, Alban, Giles).