Causal babysitting help needed

We are a young family of 3, who recently relocated over from London, UK. We are looking to find a casual babysitter, who can help with our 2.5 year old son, while we settle in to our new Melbourne life. Ideally available 1-2 mornings or afternoons a week, to help, while we await childcare placement, and also odd evening babysitting. Would love to find someone that he will bond with, and become someone familiar for him to know here in Melbourne.