Trying to spice up our sex life

So me and my husband have been together 16 years 4 kids who are all now starting to grow up and do there own thing. So now we are left with each other and although we get on amazingly well our sex life has taken a hit. We are both self conscious especially me (stretch marks and sagging bits) I would like ideas on how you have spiced things up or even how you've over come body image as I know that holds me back.

Guaranteed, your hubby doesn't care about your imperfect body lol. So long as he gets to play with it, that is all he cares about. My wife and I have been married for 15 years, so about the same amount of time. We have tried different positions, incorporating sex toys, and even blindfolds, watching porn together, light bondage (I'll hold her arms, but she doesn't want to be tied down). Lately I have noticed that she also likes when I am a bit rougher with her. I don't hurt her or anything like that, I never would. But she does like to be manhandled lately. Just some ideas. We didn't like them all, and some we have only tried once because we didn't like it. Don't be afraid to try out multiple things, to see what you guys like. I would advise against inviting another person into your sex play, and don't go swinging either. I've never done either (have had offers) but I know couples that have done those things and rarely do they survive it.