Need a little info about hairless rats?

So we just got two 10 month old hairless boys (brothers) from a lady on craigslist. I just couldn't resist :) I have read up on them but still have a few questions.

1. What kind of bedding is best? I am going to get a kleenex box so they have something to snuggle in but was wondering what would be best? Old ripped up towels, care fresh, paper towels, or??? They have a hammock and use care fresh for the floor but I wanted to give them a little extra snuggle place.

2. I know olive oil is good for their skin. Does it matter what kind? I was going to give them a little bread soaked in olive oil twice a week.