Try the Dim Sum at Rainbow Restaurant on Dundas, West of Spadina (very cheap Mon-fri), or if yu're are willing to pay more go to Rol San. Kensington Market has a variety of cheap ethnic foods. Jamaican patties, sausages, latin american pupusas, empanadas, etc. Also, another cheap thing for students is Sushi. Many to chose from up at Bloor, between Spadina and Bathurst. Which college are you closest to?