Question about role playing in the bedroom? NEED ADVICE?

hey guys, me and my wife have been wanting to get into some sort of sexual role playing in the bedroom. I'm really into MMO's and RPG's and i think it'd be a great idea for me to dress up like a bear,via hot gluing old hair from a barber shop to my body. I would then eat a diet of raw meat for 6 weeks until my body can handle it. I really want to pretend my room is "our cave". What do you think my wife could pretend to be? I don't know if she'd wanna be a bear.