Oh, and NEVER use cedar or pine shavings. Not good for snakes. If you're new to keeping snakes as pets, I recommend the book Good Snakekeeping by Philip Purser. It goes for $25 in pet and book stores but can probably be found cheaper online. At the very least consider purchasing a good ball python manual and read up on your new friend.
I've heard of people using that fluffy hamster bedding for snakes, too. But I'm not 100% certain that's a good choice, either.