Since you're current in college, you can actually use that to your advantage with certain people. You can now reliably cold call certain people all by saying "Hi $COLLEGE alumni! I'm currently in $COLLEGE" and people will talk to you. I'm sure there's a lot of people still local around the school. How do you find the people? LinkedIn or through your college, they always have things to connect with alumni.

You can then ask 'if they will warm-intro you to business owners who fit the general profile of "People who could conceivably write very small [+] checks."'