Pillows!! Haha my chickens loooove to sleep on old pillows, blankets, towels, or even old t shirts! I used to have a combination of pine shavings and pillows but now I switched to just pillows. It's practical for my chickens because they only sleep in their cage, the food and water is elsewhere and they are free range during the day. I just shake the bedding out every couple days and when they get really gross just toss em!