I imagine Brown has some sort of student run "Student Services", e.g. fridge rentals, bagel deliveries, bouncers, etc..., and would welcome service such as yours if it were run by its own students.
Why not offer an affiliate/franchise campus program?
I remember when a student would walk through the dorms each afternoon, yelling 'Bagelman is here'. His business was sanctioned by the university, otherwise it was his own affair.
These days, instead of yelling, you could have a phone app which would alert customers that the seller is near, transmit orders to him/her, maybe even use a mobile payment scheme to complete the transaction for whatever.
