There are some plants that do well in a strict environment, and others that don’t. Vegetables do surprisingly well, as well as some fruits. Peppers, for example, whether they are green, red, or chilies, can easily be grown in an affordable grow box, and they even produce great yields. They require just 6 to 8 hours of light per day, and they can be grown using hydroponics techniques.
Cauliflower and broccoli are similar, as they can also grow well using hydroponics. They require more water, but that is not an issue for an indoor grower. Beans are fun to grow as well, and they are easier to get to full-size, compared to other vegetables. You can use netting to keep them under control and help them spread in the box.
If you want to grow some fruits, strawberries are a delicious choice, especially because they don’t need much height when growing.