My wife loves getting spanked. It really gets her hot. We don't do it by itself (but I think I'm going to explore that variation) but more during the act of sex, especially when she's on top. I've also spanked her tits.
We have a paddle we use from time to time also. The paddle is plastic and has little nibs all over both sides. When I run it across her nipples, she cums. This is fairly new to us but it's been one hell of a ride!
