His job is to grow the tomatoes and keep them looking so nice that miracle-grow can come take pictures and use his examples for their marketing. You can also grow interesting, unusual varieties of herbs, like pineapple sage, ginger mint or Vietnamese coriander. Strong plants will look better and sell better, which will mean higher profits for you. There is growing interest and demand in high end professional gardening providers. Talk to wedding planners and caterers to let them know you have space available and offer them a tour. For those with more room and ambitions you could think about larger livestock such as goats.