I'm having a small business, I need food ideas to sell

So one of them is already heart shaped churros, but I need more to pair with churros. I need something that doesn't really require oven but also snacks that will make students enjoy. Something that doesn't like get bad and or dry, because I'm selling it around campus.

Again, something with no oven meaning it's mostly fried or boiled.

What you students might want to snack during school? Something to fill your hunger up for maybe 8+ hours lecture.