So pick a terrarium for your tarantula, of course know what type of tarantula you're going to get. If it's a terrestrial tarantula, length is very, very important. We don't need anything very large for any tarantula species, they're all pretty happy in a tight confinement. If it's going to an Al Borneo tarantula, you're going to want something a little taller, because they like to climb. And fortunately for consumers on the market today, there's so many choices as far as styles. The old school is your basic fish tank with a lid, that's an excellent investment, very, very inexpensive, very, very good viewing area in the glass, and with the proper halves on top, your tarantula is not going to escape. New to the market are teeny, tiny, beautiful terrariums that have front opening doors that's easier to get out the animal from the front, the viewing area is spectacular. They have air baffles through the front of them that allows airflow, and your terrestrial tarantula will be happy in one like this, and your Al Borneo tarantula there. If budget is your concern again, even plastic boxes that used to be used before for things like hermit crab, are now perfect for tarantulas. They hold the humidity, they're easy to sand inside of, they're just awesome, inexpensive, lockable terrariums to keep your specimen safe and happy for its entire lifespan.
Once you've chosen your species and which type of enclosure is going to work for you, you got to make sure you put it in the right spot in your house. Many people make the mistake of saying, I thought he wanted some sunlight, and they put him in a window sill. Glass, plastic, would quickly amplify the sun's ray, and you would kill your tarantula, he will be cooked inside that. Any animal does not want to be in that type of environment. If you're going to put him in the basement to get him out of sight, and people don't want to see tarantulas, make sure it's not too cold in your basement. The winter time in the northern strata of the United States, it gets cold, you'd have to put a supplemental heating unit on top. Otherwise, a tarantula is happy in 70 to 80 degree weather all year long, even the tropical species can deal with that. So you don't have to worry too much about where he goes in a nice warm house, keep him away from the windows, and keep him out of cold basements, and you're going to have one happy tarantula.