We had this set up when we were at Ducks. We looked for someone twice and each time had just one applicant who luckily turned out to be great. Because you're not offering many hours, applicants tend to be people who have another job, making it complicated during the holidays. It will be around ?10 an hour, which again makes it very expensive during the holidays. It could be that your nursery allows staff to work for parents - that would be your best bet.