Lava rocks, it can be time consuming to hook up with someone suitable sometimes, but the effort is worth it. As stargazer pointed out, all for the price of a drink or two.
Best experience I had, to date, is an Asian woman I met... after two drinks she says, "Come on, we're going to my apartment,I want to see what you've got."
This woman had more toys, and enthusiasim than any SP that I have ever met, and in fact saved my over $$ for an appointment I had made for the following nite, that I had to break, because I was so wipped out from our 4-hour sexathon.