To the experimental....

My partner and I have been together for a fair while, and are both pretty adventurous in bed! We've tried all sorts of positions, in all sorts of places, been toed up, swap fominant roles, etc, so my question is, any tips to spice up what we may have already tried? Or any suggestions that you think are underatted and not enough people know about? We both have a High sex drive and have sex anywhere between three (if we hardly see eachother and /or are working a lot) a week, to one to three times a day (the prefered diet ;) ) any tips for me to pull something outta the bag and surprise him would be awesome ! So any quirks that work for you an your man? Im all ears!