Just started Apache Kafka, need a very basic project idea

Hi all, I'm a final year Computer student and primarily work with Spring boot. I recently started my foray into Big Data as part of our course and want to implement Kafka into my Spring Boot projects for my personal development as well as better chance at college placements

Can someone please suggest a very basic project idea. I've heard of examples such as messaging etc but that's too cliche

Edit: Thank you all for your suggestion!