Enterprising, entrepreneurial college students are out there. Our job is to find a few - and help them work this market category. Given the nature of our business model (no physical products, high tech, low cost to start) what we do is very well suited, not to just 18-22-year-olds, but also Graduate Students who are struggling and living on a Teaching Assistant or Graduate Assistant stipend.
So... how do you go about it? The first way is to "go there" with drop cards, approach people, put stapled, short stacks (5) of your mini-flier on bulletin boards...
The second way is to do some research online and find out the names of Greek System leaders and go to these individual houses with a letter addressed specifically to them. This letter [template] will be added here, but at this writing is not yet ready. You can do the same with student leaders of any organization... go to the Student Union armed with their name and simply introduce yourself with your drop card or business card.
There are a "million" bulletin boards on college campuses. Walk, talk, and post short stacks... many will encased in glass, if so, you can tape a stack to both sides of the case. Many custodians are trained to remove anything taped to the front glass, so don't waste your time putting anything there.
Third, you can email because most colleges link to student email accounts... but be forewarned, do not include links in your initial correspondence. Simply convey the "proposition". If you include links, it is definitely SPAM. Just like social media, you want to invite people based on general information, begin a relationship and provide links when you have their PERMISSION.
And last, you can use our Independent Grad site. You can link to it, LIKE THIS. Or, you can simply send people to IndependentGrad.com and use this site on your drop cards for campus campaigns.
One last thought in regard to Higher Ed, if you go to campuses. Every department has an office suite. Every office suite has staff. This is both academic departments and support departments like Admissions, Financial Aid, Student Services, International Students Office... Any and all of these have "potential". Also, when you walk into one of these offices and you see [who looks like a student], they are most likely a Work Study student and being there means that this work is a part of their Financial Aid package. As such, inherently, they "need" money... or may be money-motivated. It is completely OK to ask, "Are you a Work Study student?"