I've never slept with a blanket, I just have the same basic arrangement of a duvet cover and two pillows all year round. I could do with a dressing gown to keep my warmer of a night, but that's not something to sleep in. As for animals, no, I don't. I have a cushion I keep on my bed during the day that I made when I was in year 8, but that's the only thing (other than myself) that goes on my bed.