well, it also depends upon the age of the coastal you are getting

im guessing its going to be a hatchy, so usually the deal with hatchies is to get a small tub usually called a 'click clack' due to the lid being able to be 'clipped' to the box, making it harder for your little hudini to escape

(i use the 7ltr sistema containers, get them from woolies or bunnings etc.) put some holes in the top for ventilation, you can use a soldering iron to get clean holes that wont be sharp for your new little pet to hurt themself on, or drill the holes and make sure there are no sharp edges. try to put more holes to one side of the container, then the other. (this helps with the temperature gradient) once you have done that, get a heat cord or a heat mat, and put it under the side of the container with less holes, to have one side hotter then the other. Of course, also make sure you have a thermometer and a thermostat, to guage the temperature being dished out, so as not to over-cook the little thing! as previously mentioned, the preffered body temperature of a coastal is around 30-35 degrees for the hot end, and around 24 degrees for the cool end. As you probably know snakes are ecto-thermic, they use the temperature around them to heat thier bodies, that is why it is imperative for a gradient so they can choose what temperature they would like to be at

Once you have the temperatures and all that worked out, then all you will need is to choose a substrate (cage flooring) generally paper towel does wonders for the hatchy snake

you'll find many people use this for thier click clacks. Then a water bowl, usually placed in the cool end of the enclosure. Not only does it help the snake when it is thirsty, but it can also be a big help towards humidity aswell, like when the snake is going into a shed, you can bump up the humidity by moving the water bowl closer to the hot end. but beware, if it is too humid in the enclosure, it can lead to diseases such as respitory infection (RI) and the like, but i wont go into too much detail about those. Then you will need a perch, as coastal carpets are semi-arboreal they like a bit of time off the ground, and since you are creating an environment similar to what they would normally have in the wild, a perch is just the thing to help with this

(also it gives the snake something to rub against when it goes into shed aswell)
that is just the beginning to your new little reptile, there is much more that i could tell you! but that would probably take all day and maybe longer to teach you

and its always fun to watch your new little pet, and to learn as you go, so i wont spoil it all for you! apart from this there is feeding, and what to do when choosing a snake, and other simple details. if you have any other husbandry related questions, dont hesitate to ask the breeder! im sure they will be more then happy to help answer your questions
hope this is of help to you, have fun with your new little friend!
kind regards,
Nat
