I wrote this under another thread, but was not sure you would see it there:

I asked my Master/husband your question. I am the slightly more kinky one here, and he does like to be dominant but he doesn't crave it like I do being submissive. So from his point of view, here is what he thought would lure him in if he'd never thought of it. Some time tell him you would like to role play/pretend to be his slave for the evening and you will do whatever he orders. He might start out with little things like "pick up my pen" or "wash dishes" but if you are hopping to it with "Yes, sir" sooner rather than later it will occur to him to have you act out his sexual fantasies.
If he gets into that, later you can ask about tying up/bondage, if he'd like to try it. After that the spankings follow more naturally. Then see where things lead.