These cute bunny plates are very reasonably priced at Pier One. See them here.
I love these Gien salad plates, great for a country house. See them here.
These plates from Scully & Scully will also look great on a tabletop in a country house. See them here.
These topiary plates scream Tory Burch house in the Hamptons. See them here.
And of course, there are the equestrian plates. I have a set of the show jumping plates. I use them with white china and black or red napkins. See them here.