Go to the website of departments, research groups, and professors at your university and get a broad understanding of what they are up to. Maybe read (the abstr

Go to the website of departments, research groups, and professors at your university and get a broad understanding of what they are up to. Maybe read (the abstract of or the entirety) of one of their recent papers or check out their public outreach work/press releases. This will help you build an understanding of who's doing what at your university, their current progress/steps, etc. Contact and talk to those professors/research groups that are doing work that you are interested in -- they might have some ideas for undergrad projects.