One clear project
Your portfolio starts with one project, not five half-finished repos.
Pick the project a reviewer can understand fast. It should solve one clear problem, for one clear user, with one result they can see.
What to choose
Choose something you already built, even if it is rough. Do not start a new idea because it sounds better.
Good examples: a college event tracker, UPI expense splitter, hostel complaint form, campus bus tracker, placement prep dashboard, or mess menu page.