When you have extra money, what do you do with it? Do you just save it in the bank or do you invest in somewhere? From what I've heard, it would be best if you can invest it by putting up a business, preferably something that you're interested and passionate about. If you like baking, then why not put your own bakeshop? :)
You can also invest it in a lot of other ways. You can buy gold online and then later on sell it for a much higher price. Investing in stocks can also be quite profitable. Many of my friends are doing it now and I think they're actually earning a lot from it.
There are still a lot of other things you can do to make your extra money be productive. However, I suggest you do your research first before deciding on which investment to take on.