I grabbed drinks with a chick last week at two different venues. We ended up going back to my place to drink more. I escalated, but we didn't do anything more than making out and heavy petting, since she said she wasn't ready (she kept refusing my advances to go into my room).

Even so, I think she's into me, and we've agreed to meet up a second time. What should I suggest we do for the second date? I want to keep it as causal as possible, but inviting her over seems too casual.