Already working methods to try locally

I'm intrested in trying some methods that are already working world wide, locally in my small country. For example car listings, realty listings, job/resume listings, fiverr clones, deal sites.
Currently all these already exist, i was wondering if there is anything more new and fresh which is currently becoming more popular. Maybe you guys know any new popular sites that are making some good income. If not i will try one of the above mentioned, but it means will have to deal with the competition. Im not doing this necessarily to earn big money, i just want to offer something fresh and earn experience with small business and get to somewhere from there.

Try to use buy low and sell high concept.
What you can find in cheap price but others can't. Sell that things.
Hope this help
PS.I am newbie too

if you have capital of couple hundred bucks
try this out > flipping iphones/smartphones
also give this a try > easy method that requires a couple bucks a day

-JB