typical nanny duties are anything and everything involving children
including looking after their clothes, their rooms, nutrition and health, and stimulating them intelectually.
So childrens washing and ironing and name tape sewing is fine.
cooking childrens food (from scratch, even shopping for ingrediants) and washing up / laoding dishwasher and leaving a tidy kitchen afterwards is fine (Leaving the tidy kitchen that nanny was left
tidying playroom, childrens bedrooms / bathroom and playroom is fine, including things like light hooveing and dusting!
sorting tpys, and washing / maintaining them!
Also 'playing with' children, helping with homework, taking to clubs / swimming lessons / arranging playdates
Whilst some nannies may be happy to do them either regualarly or occasionaly, cleaning drains / cleaning general livng areas / walking dogs, feeding pets /cooking meals for parenst, doing parents washing / ironing etc are not "nanny" duties
BTW im a nanny and i can (and do) cook PROPER homemamde food....