Travel.  Fine clothing.  A really cozy house.
The thing is, I wouldn't ever be happy if I was trading favors for cash.  Especially sexual ones.  As a wise man once said, "Give it away give it away give it away now."  I guess one could say I'm living off of my husband to some degree because he makes more than I do, and I couldn't afford our lifestyle without his salary....but of course I'd respond with the usual mushiness about how I'd live in povery with him if need be.
At one point I was a benefactor for my husband....ask him what he did with that time.  
