Date ideas!

I've been with my boyfriend for seven blissful months now, and throughout our relationship, he's paid for almost all of our dates. We've been on quite a few - we go out to eat almost every day that we're together (at least 3x a week), with him footing the bill in 99% of the places. I'm a college student and unfortunately am unemployed (read: broke AF), but I do really want to treat him sometimes. On Sunday, I'm taking my boyfriend out to play paintball - I always feel so proud when I get the chance to splurge for him! But because I have no income, I can't afford to pay for expensive dates so often, so I was wondering if any of you ladies have ideas for creative but inexpensive dates! (I live in New York City, so I'm blessed with an array of options, but I'd still like to hear your ideal dates!)