Out of all of these factors, cost is the one that has the biggest impact on the little projects that ece students complete. You can spend a lot of your time working on construction projects as an engineering student and utilise the college's facilities for smaller projects, but for obvious reasons, you cannot spend more money on your project.
Any engineering student may effectively display their skill sets through a short project. You want to make an impression on the interviewer or the examiner with your projects, which genuinely showcase your technical experience.