Sitter in South Yarra for 7 & 9 year olds

We are looking for someone to look after our 7 and 9 yo children over the school holidays for some days between the 13th to the 29th of January. And then when school goes back, possibly a couple of nights a week pick up from Toorak primary school and bring home for afternoon tea and home work or play. We live in South Yarra.