I just got a Guinea Pig, What supplies do I need to buy, or can I make?

You SHOULDN'T get her a ball or wheel. NEVER. And wood shaving can give piggies upper respiratory infections, which can lead to death. So I recommend Carefresh, or a different recycled bedding product! Also, you should probably go back to the store and get a piggie who she was in the cage with, but first make sure you cage has adequate space for 2 guinea pigs, and take into account that they grow fairly quickly, and get pretty big. But I think you have most things taken care of! But you might want to get them chews, for their teeth!!:) have fun with your new guinea pig!!:)