What you'll need:
So, I won't lie. I decided to do this because of this stellar pot from IKEA. Its powder coated steel and I can hang it wherever I want. Coolest part? The whole pot is solid so I don't have to worry about heads or toes getting caught anywhere. Done.
The soil is from this cool company, Ecoscraps. I opted for this soil because its organic and consists of two ingredients: compost from plant material and compost from forrest material. no poop here. Dont stop there though, did you know that you can sterilize soil? Yeah, just pop some soil in your oven and cook to 160 degrees like research shows here to kill off mold, fungi, bacteria, and creepy crawlies that you don't want in your cage. Ill be honest though, I bring my parrots outside, they have an outdoor aviary and I bring browse in. They're exposed to a whole lot more than what comes in a bag of soil.
Last, pick out some plants! I went with some of Bonnies Organic choices. Romaine Lettuce, Kale, Oregano, Basil, Spinach, and Dill. You can go crazy and choose some greens to fit your birds fancy and your green thumbs ability.