Passion is by far the most attractive thing about anyone. Someone who is invigorated/excited by whatever it may be (knitting, films, milkshakes, rainy days, etc...anything.) Intelligence is the other big one for me.
I don't need very much more than good company to be happy. I'm a homebody and like the simple things in life (reading, playing a board game or playing music is more than enough to please me for a night).