Dorm-room protein for when appetite is on strike

I’m a broke junior in a dorm with one microwave, a mini-fridge, and a meal plan that closes before my lab ends. My appetite has gone from ravenous raccoon to polite housecat, so I keep buying protein and then staring at it. Current rotation: tuna packets, cottage cheese cups, Greek yogurt, hard-boiled eggs smuggled from the dining hall, and frozen edamame I microwave until it’s somehow both hot and cold. Costs about $22 a week if I skip the fancy bars. The weird win: cereal is no longer dinner. But I’m bored. What’s your cheapest no-stove protein that doesn’t taste like punishment? Bonus if it survives a backpack.