I met this girl off a dating app last week and we went out for a drink. When we were there she said she doesn't really drink but she figured it was a good place to meet. She did have one drink and we stayed for a few hours.

I want to ask her out again, but I also want to keep things pretty casual if you know what I mean. Not looking to take her out to dinner or something like that. Trying to think of ideas roughly akin to "going out for a drink," but obviously something different. Any ideas?