There are many different topics that could be chosen for a maths project, and the best one will depend on the interests of the student. Some possible ideas include exploring different ways to solve a certain type of maths problem, investigating the properties of a particular mathematical object, or creating a new method for visualising data. Whatever topic is chosen, it is important to make sure that it is something that the student is passionate about, as this will make the project more enjoyable and rewarding.