You'll need your ID to get into the back room of 7th Heaven, the self-described "anti- authoritarian" store on Troost. Once inside, you'll see perhaps the largest selection of tools of the erotic arts in the city. Those include the standard dildos, rubber vaginas, tongue rings, belly rings, other rings, and even sex dolls. You'll also find sex toys you didn't know existed, and a few you'll have no idea what to do with. If there's a way to use genitals as you haven't before, this shop will find it for you, no matter what unlikely combination of levers, pulleys and battery power is needed.