College towns are a superb idea.

In my experience college students are generally completely useless at anything practical, and they don't even know how to use Google or YouTube to solve problems. If you're able to watch a tutorial and learn to change a lightbulb, dryer filter, unblock a sink, whatever, you're ahead of ~98% of students.

If you just get on with the jobs, do the job right, charge a sensible amount and don't rip people off, then you're ahead of ~75% of other people doing the same work. You will then get calls to do more work for the same people, and people they know.

You will then get so many offers of work you will be able to choose which jobs you want.

If it's a repeat customer, you may want to help them out with their broken toilet macerator, otherwise you can just apologize, and tell them you're too busy, because you are too busy. If you're not busy, then roll up your sleeves and do it, because it will reward you. People are usually grateful for that kind of thing, and that's rewarding in itself.