Zou's Mum asks Zou to clear out some toys he has grown out of. Zou finds his old teething ring, which, rather than throw away, Mum seems keen to keep as a memento of Zou's babyhood. Zou has his work cut out hiding it from various visitors; Zinnia, Elzee, etc. But in the end, it is used as an example of how much Zou has grown up.Zou's Mum asks Zou to clear out some toys he has grown out of. Zou finds his old teething ring, which, rather than throw away, Mum seems keen to keep as a memento of Zou's babyhood. Zou has his work cut out hiding it from various visitors; Zinnia, Elzee, etc. But in the end, it is used as an example of how much Zou has grown up.