Non-exhaustive means incomplete. The list is examples of the kind of things you could do, but if you think of something that is not on the list that fits the assignment, you can do that, too. If you are unsure of what you want to do for the assignment, pick something from the list. If you read the assignment and there is something that you would love to do, but it isn't on the list, do that. Depending on the instructor, you might to check your alternate topic first.