I think you can go about "spicing things up" in a way that wouldn't be all that ego damaging since your H is generally ready and willing. I mean would it be all that threatening if you were to give your H a copy of "Joy of Sex" or "1001 Nights of Sex" and ask him to bookmark something he would like to try and then you could do the same. I gotta believe that there is SOMETHING your H would like to do that maybe he's just a little eensy-beensy bit too frightened to bring up with you too. If he claims otherwise, you could just start listing the Top 20 male fantasies out loud and look for signs of pupil dilation or penile movement with each item (LOL- but I'm only kind of kidding ).
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver
). 