Looking for a Small Scale Business Opportunity

When I was still on my fourth year in college, I was supposed to be having my first business financed by my sister. But due to some reasons considering that I might not attend it well because of the demanding time requirements of a graduating student so I canceled the plan. It was a franchise of San Miguel Purefoods' Ham Delights food cart and was already on its way to realization as I have already procured registrations and permits but has been canceled. 

And now that I am fully capable of manning such a business, I am looking for a small scale opportunity to start with. Not necessarily a franchise but any business that would get in with today's market trend and at a low investment cost that I can afford to finance. I am still clinging into a food cart business and planning to put it either in a mall, school, terminals or any location with high foot traffic of the targeted market. 

Anyone could give me a suggestion to consider on this rumination is truly a big help. :D