Here are few examples and business idea:
Construction supply - is great business when you know who to supply and retain them. Sometimes bidding is involve with your competition and if you are not prepared or if you did not see this coming in your presumption plan. You might end up with no customers at all.
School supply - this will obviously prosper if you will situate this near a university or school. You must see for sure how far or close is the school and see to it that your products are accessible by the students. If you have competitors try to see their prices and try to lower your amount.
Food business - this business is probably the most need supply of humankind where ever they are. But just like a construction and school supply, a feasibility study should be done first in order to gain good results. Proper inspection of the factors that may contribute success is your responsibility or you may ask for professional help.
In the end, your decision combined with guts will make your imagination into real. Just like building an office, a blueprint must be prepared accordingly to assure the right fittings of the materials needed. That is also certainly the right way to build your trade by thinking ahead about how to create progress and solve problems