- "Rabbit"s feeling sleepy. She curls up in a chair. Tap! Tap! Who"s that? Oh dear! It"s Builder Bear." Rabbit is trying to get to sleep, but everyone is being so noisy. Lift the flaps and find out who is keeping Rabbit awake! Collect all four board books in The Acorn Wood series: Postman Bear, Fox"s Socks and Hide-and-Seek Pig.