Tie her up, blind fold, kama sutra positions, go to Spencer's and pick something up, different rooms, pinching nipples, roleplaying, just get creative..
Have you ever tried pulling her hair and biting?
did you try pulling her hair, spitting in her mouth and making her walk around like a dog? how about slapping her around, also throw her around the room and f*** her everywhere, I'm not a big fan of toys but you can always tie her up, check out randa mai's stuff
how about costumes, acting out a scenario?