Hold up. Am I the ONLY person wondering why so many people chose the coffee? Not everyone likes coffee! I know I don't. I've only had a couple sips of it and I hate it. She asked for something impressive. That's not impressive. That's just CHEAP and LAZY. On the other hand, I would love to have a song written for me. If I knew how to sing I would write a song for somebody else. The coffee would be a good way to get to know them and talk, but they aren't asking for that. In no way is that impressive to anyone, other than the fact that they can actually talk to your face in today's world (instead of looking at their phone).
Simply asking them out is the only option that isn't over the top when trying to impress someone that you aren't dating. You telling them that you like them will be seen as flattering, while doing any of the other stuff may make you seem like an obsessive lunatic, as unfortunate as that may seem.
Things like poetry and songs can be awkward. There's a thin line between romantic and weird and creepy, and where that line should be is different for everyone.
General side note for everyone: before you judge someone as creepy, think about it from there perspective, think about their intentions, and think about the fact that some people might find it cute. Maybe they're not so creepy after all.