There are obviously all kinds of different carriers you can use to take your Green Cheek in, whether you buy a cat or dog carrier (the plastic kind with a cage door, or better yet are the fabric kind that you can fold-up, available at any Walmart, any Big Lots, or any pet store obviously, I found a really nice Coleman brand fabric Dog carrier at Big Lots just by chance, size medium, and it's perfect for my birds, and much nicer than the plastic carriers because they don't slide all over the place)...Or you can simply go to any pet shop and buy either a small bird cage, like for Finches is great because they are small and square/rectangular and collapse easily, or you can actually buy a special carrier meant for birds, but they are going to be much more expensive, usually into the hundreds of dollars. Just depends on what you want to spend...If you want to get a really nice, expensive parrot carrier with a built-in perch and bowl holder, then you can buy a Pak-o-Bird online, but again, you're looking at least at a couple hundred dollars for a new one, or a used one on Amazon or eBay for between $100-$200.