Exotic plants?

So I live in RI and I am a plant fanatic. I have all those plants that everyone has spider plants, money trees, umbrella trees, mother-in-law tongues, doctor plants, ivy, Christmas cactus, jade, and aloe. But I am looking for something that will grow in this colder weather, that is not only one that I don't have but one that looks cool. I want something that needs watering once a week; I have all different light in my house, so that is not an issue but I need help. PLEASE HELP. When you reply send links if you have them for me to see what it looks like. :-) thank you.