Tough to answer, because everyone is different as far as turn-ons and fantasies. But, you asked for ideas, so here are a few: flirt and tease each other outside the bedroom, date night, watch porn together, masturbate with a large dildo while your guy watches, talk dirty, anal play/sex, fishnet hose/bodystocking, costume role play, sex in the shower. Is that a good start? Sex Is Fun is a pretty good book to check out with some ideas and lighthearted approach.