When I was little I shared a room with my older sister. She was a teenager, ten years older than me. I slept in a crib for a long time, maybe until I was 4 or 5 years old. It was an unusual crib because instead of wooden bars, it had mesh screens on the side, and, even more special, it had a top that you could swing up from the side and cover the top with. I loved it when my sister would put the top on the crib, and I would prowl around inside and pretend I was a tiger in a cage at the zoo.