“Refried beans” and “macaroni & cheese” are always solid choices. “Salted pretzels” can be a good snack to help you focus.  Any of those sound good to you?
assitant
Here’s a great snack I used to have when I was a kid:
assistant
What are some snacks I can have to help me cram for a test?
user
There’s plenty to choose from. Have you ever had “sugar-free blueberry muffin mix”? Or “Chex mix”? Both of these are excellent choices. Some people like to have “almond butter” with them as well.
assistant
any other ideas?
user