Seems like creating a garden on your balcony is not such a difficult job. Place a few pots and you will have it. Choose your favorite plants. A growing trend is to plant your own food. So, you can go for the basic herbs that are used in coking, such as rosemary, parsley, basil. Soem would even go a step further and grow tomatoes and cucumbers in large pots. If this sounds challenging, then try it.
If you want to make your balcony your little paradise, then go for colorful flowers. As you can see the example below, it looks nice when you have small trees in pots. And the best part is the artificial grass. Place it on the floor to feel like you are outdoors.