What to put in a chinchilla travel cage?

I am picking up my 8 week old chin this weekend! I'm super exited as it is my first! I have all the supplies, a critter nation cage, etc needed but I don't know what to bring when I go to pick him up. I have one of those cat travel carriers but I don't know what to put in it. We raise puppies and so we always advise the owner not to put food in with the puppy because it might throw up but chinchillas, I heard don't throw up so I don't know if I should put hay / food in there or not.