There are a number of plants that will grow well in containers and containers of all shapes and sizes are an ideal way to grow whatever you like on a balcony. If you have six hours of sunlight a day then you can set up a vegetable garden and grow your own vegetables organically.
Cherry Tomatoes,for example, do well in containers. I use CampJoy but any cherry tomato will do well in a container and the bonus is you can grow basil in the same container. Two containers, 18 inches across and 2 feet deep will hold two tomato plants and two basil plant.