Strottledire
A oval bowl-shaped carriage that is a cross between a baby's stroller and a cradle, which is used just as a stroller with handles to hold the carriage and push the wheels forward. The name, "Strottledire", is also a way to describe the bell sounds of the lullaby that plays when the stroller is moving, similar to a children's rocking chair toy that plays a lullaby with bells from the mechanics of the clockwork in a small box, much like the insides of a music box, or a jack-in-the-box toy.
The baby's mother is pushing him in the strottledire carriage while singing along to the lullaby that plays in it to calm the baby.