I was going to say this might remind your kids of going to school. But realistically, do many kids really get a yellow bus to school? I suspect it depends on which part of the world you live in.
Yellow bus-user or not, this is a wonderful design that operates both as plaything and occasional seat for a small person, with the added bonus of looking good should you be a style-conscious parent.
It is made in Barcelona and is sized at 53 x 29 x 35cm, selling for €85.