I think you want to do a project that MIGHT turn to a tech startup in the future. If you have no ideas, ask yourself, what could I use right now and build it for you. Do you need a way to plan activities with friends remotely? This could be an idea. Build it for yourself and your friends and then try and share it with others to see if they would want to use it, if you have atleast one person that would want to use it, then you are on to something.
It seems like having no ideas is at least one problem you have - what about a way to expose people to new ideas or curate ideas that people have and want to give away.
I’d say get out and experience life and enjoy being in college/young and maybe get exposure to problems other people are facing too along the way
Trust me, you don't want to get stuck running a business during school. Build cool stuff during the summer but don't worry about making a sustainable business yet.